Cited by 149Alzheimer's disease research and treatmentsCalcium signaling and nucleotide metabolismSphingolipid Metabolism and Signaling

Presenilin mutations linked to familial Alzheimer's disease cause an imbalance in phosphatidylinositol 4,5-bisphosphate metabolism

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Landman, Natalie, Jeong, Soon Youn, Shin, Sun Young, Voronov, Sergey V., Serban, Geo, Kang, Min Suk, Park, Myung Kyu, Di Paolo, Gilbert +2 more·2006·Proceedings of the National Academy of Sciences

Abstract

Phosphatidylinositol 4,5-bisphosphate (PIP 2 ) is an important cellular effector whose functions include the regulation of ion channels and membrane trafficking. Aberrant PIP 2 metabolism has also been implicated in a variety of human disease states, e.g., cancer and diabetes. Here we report that familial Alzheimer's disease (FAD)-associated presenilin mutations cause an imbalance in PIP 2 metabolism. We find that the transient receptor potential melastatin 7 (TRPM7)-associated Mg 2+ -inhibited cation (MIC) channel underlies ion channel dysfunction in presenilin FAD mutant cells, and the observed channel deficits are restored by the addition of PIP 2 , a known regulator of the MIC/TRPM7 channel. Lipid analyses show that PIP 2 turnover is selectively affected in FAD mutant presenilin cells. We also find that modulation of cellular PIP 2 closely correlates with 42-residue amyloid β-peptide (Aβ42) levels. Our data suggest that PIP 2 imbalance may contribute to Alzheimer's disease pathogenesis by affecting multiple cellular pathways, such as the generation of toxic Aβ42 as well as the activity of the MIC/TRPM7 channel, which has been linked to other neurodegenerative conditions. Thus, our study suggests that brain-specific modulation of PIP 2 may offer a therapeutic approach in Alzheimer's disease.

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Authors
Landman, N., Jeong, S. Y., Shin, S. Y., Voronov, S. V., Serban, G., Kang, M. S., Park, M. K., Di Paolo, G., Chung, S., & Kim, T.-W.
Affiliations
  • Columbia University Irving Medical Center (US)
  • Sungkyunkwan University (KR)
  • Department of Pathology, and
Venue
Proceedings of the National Academy of Sciences
Published
2006-12-19
Volume
103
Issue
51
Pages
19524-19529
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2047442659
Cited by
149
References
50
Citations by year
2026: 7 · 2025: 7 · 2024: 5 · 2023: 10 · 2022: 6 · 2021: 1 · 2020: 12 · 2019: 6 · 2018: 3 · 2017: 8 · 2016: 5 · 2015: 8 · 2014: 9 · 2013: 14 · 2012: 13
FWCI
4.43
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ellison Medical Foundation
  • National Institutes of Health
  • Samsung
  • National Institute of Neurological Disorders and Stroke (R01NS043467, F31NS051186, NS43467, NS51186)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD047733, R21HD047733)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sphingolipid Metabolism and Signaling
Keywords
presenilin mutations, familial Alzheimer's disease, phosphatidylinositol 4,5-bisphosphate, TRPM7, ion channel dysfunction, amyloid-beta 42, lipid turnover, Alzheimer's disease pathogenesis, therapeutic target
MeSH terms
Alzheimer Disease, Cell Line, Electrophysiology, Humans, Mutation, Phosphorylation, Blotting, Western, Amyloid beta-Peptides, Protein Serine-Threonine Kinases, Phosphotransferases (Alcohol Group Acceptor), TRPM Cation Channels, Presenilins

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