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Par3 regulates polarized convergence between APP and BACE1 in hippocampal neurons
Open accessAbstract
The convergence between amyloid precursor protein (APP) and its β-secretase β-site APP cleaving enzyme 1 (BACE1) is a prerequisite for the generation of β-amyloid peptide, a key pathogenic agent for Alzheimer's disease. Yet the underlying molecular mechanisms regulating their convergence remain unclear. Here, we show that the polarity protein partitioning-defective 3 (Par3) regulates the polarized convergence between APP and BACE1 in hippocampal neurons. Par3 forms a complex with BACE1 through its first PDZ domain, which is important for regulating BACE1 endosome-to-TGN trafficking. In the absence of Par3, there is an increase in the convergence between internalized APP and BACE1. In hippocampal neurons, loss of Par3 leads to increased APP and BACE1 convergence in axons but not in dendrites. This polarized convergence mainly occurs in retrograde or stalled axonal late endocytic organelles and is likely due to compartment-specific regulation of APP trafficking by Par3. Together, our data show a novel function for Par3 in regulating polarized convergence between APP and BACE1 in hippocampal neurons.
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The expression of PARD3 was decreased in AD patients.
“the expression of PARD3 was decreased in AD patients”
From Effects of SPI1-mediated transcriptome remodeling on Alzheimer's disease-related phenotypes in mouse models of Aβ amyloidosis (2024) · cites this paper as [36]
Knockdown of Pard3 increased intracellular Aβ accumulation in vitro.
“knockdown of Pard3 increased intracellular Aβ accumulation in vitro36,37”
From Effects of SPI1-mediated transcriptome remodeling on Alzheimer's disease-related phenotypes in mouse models of Aβ amyloidosis (2024) · cites this paper as [36]
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The cell-polarity protein Par6 links Par3 and atypical protein kinase C to Cdc42
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“Par3 functions together with atypical PKC (aPKC) (Sun and Zhang, 2017), which forms a trimolecular complex with Par3 and another polarity protein Par6 (Joberty et al., 2000).”
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Cited by
Sorted by citations
Kim, B., Dabin, L. C., Tate, M. D., Karahan, H., Sharify, A. D., Acri, D. J., Al-Amin, M. M., Philtjens, S., Smith, D. C., Wijeratne, H. R. S., et al. (2024) · Nature Communications · doi:10.1038/s41467-024-48484-x · Cited by 28
“Previous studies demonstrated that the expression of PARD3 was decreased in AD patients, and knockdown of Pard3 increased intracellular A β accumulation invitro 36,37 .”
Metadata
- Authors
- Sun, M., Huang, C., Wang, H., & Zhang, H.
- Affiliations
- Rutgers, The State University of New Jersey (US)
- Nantong University (CN)
- Corresponding author
- Sun, Miao
- Zhang, Huaye
- Venue
- Neurobiology of Aging
- Publisher
- Elsevier BV
- Published
- 2019-05
- Volume
- 77
- Pages
- 87-93
- ISSN
- 0197-4580 (ISSN-L)
- PMC
- PMC6528466
- OpenAlex
- W2911319138
- Cited by
- 10
- References
- 1
- Citations by year
- 2024: 3 · 2022: 3 · 2021: 3 · 2019: 1
- FWCI
- 1.20
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Neurobiology of Aging (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Natural Science Foundation of China (31500845)
- Foundation for the National Institutes of Health (NS089578)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Keywords
- Par3, amyloid precursor protein, BACE1, beta-secretase, Alzheimer's disease, hippocampal neurons, PDZ domain, APP trafficking
- MeSH terms
- Protein Domains, Axons, Hippocampus, Neurons, Protein Binding, Cell Adhesion Molecules, Amyloid beta-Peptides, Aspartic Acid Endopeptidases, Amyloid beta-Protein Precursor, Cell Cycle Proteins, Protein Transport, Adaptor Proteins, Signal Transducing, Amyloid Precursor Protein Secretases
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