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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Araki, Yoichi Kimura, Ayano Urano, Satomi Piao, Yi Hata, Saori Nakaya, Tadashi Taru, Hidenori Suzuki, Toshiharu Yamamoto, Tohru Sobu, Yuriko Takei, Norio |
| Description | Author Affiliation: Takei N ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Sobu Y ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Kimura A ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Urano S ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Piao Y ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Araki Y ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Taru H ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Yamamoto T ( Department of Molecular Neurobiology, Faculty of Medicine, Kagawa University, Miki-cho 761-0793, Japan.); Hata S ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Nakaya T ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and.); Suzuki T ( From the Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan and tsuzuki@pharm.hokudai.ac.jp.) |
| Abstract | The neural type I membrane protein Alcadein (Alc ), is primarily cleaved by amyloid ß-protein precursor (APP) -secretase to generate a membrane-associated carboxyl-terminal fragment (Alc CTF), which is further cleaved by γ-secretase to secrete p3-Alc peptides and generate an intracellular cytoplasmic domain fragment (Alc ICD) in the late secretory pathway. By association with the neural adaptor protein X11L (X11-like), Alc and APP form a ternary complex that suppresses the cleavage of both Alc and APP by regulating the transport of these membrane proteins into the late secretory pathway where secretases are active. However, it has not been revealed how Alc and APP are directed from the ternary complex formed largely in the Golgi into the late secretory pathway to reach a nerve terminus. Using a novel transgenic mouse line expressing excess amounts of human Alc CTF (hAlc CTF) in neurons, we found that expression of hAlc CTF induced excess production of hAlc ICD, which facilitated APP transport into the nerve terminus and enhanced APP metabolism, including Aß generation. In vitro cell studies also demonstrated that excess expression of Alc ICD released both APP and Alc from the ternary complex. These results indicate that regulated intramembrane proteolysis of Alc by γ-secretase regulates APP trafficking and the production of Aß in vivo. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 2 |
| Volume Number | 290 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2015-01-09 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Amyloid Precursor Protein Secretases Genetics Metabolism Amyloid Beta-Protein Precursor Calcium-Binding Proteins Chemistry Animals Cadherins Carrier Proteins Cytoplasm Golgi Apparatus Membrane Proteins Mice Mice, Transgenic Nerve Tissue Proteins Protein Structure, Tertiary Proteolysis Secretory Pathway Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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