Related Experiment Video

Updated: Oct 1, 2025

A Fluorescence-based Assay of Phospholipid Scramblase Activity
09:52

A Fluorescence-based Assay of Phospholipid Scramblase Activity

Published on: September 20, 2016

14.1K

Lipid flippase dysfunction as a therapeutic target for endosomal anomalies in Alzheimer's disease

Nanaka Kaneshiro1,2, Masato Komai1, Ryosuke Imaoka1

  • 1Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.

Iscience
|March 4, 2022
PubMed

Insights

Alzheimer

Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Endosomal anomalies and impaired vesicular traffic are early Alzheimer's disease (AD) pathologies.
  • The precise mechanisms and therapeutic targets for these early AD pathologies remain elusive.

Purpose of the Study:

  • To investigate the role of TMEM30A and its interaction with beta-CTF in AD-related vesicular trafficking.
  • To explore the therapeutic potential of targeting this interaction for AD treatment.

Main Methods:

  • Utilized AD model cells (A7) and AD model mice (AppNL-G-F/NL-G-F).
  • Investigated the interaction between beta-CTF and TMEM30A.
  • Assessed the impact of T-RAP peptide on endosomal anomalies and lipid flippase activity.

Main Results:

  • The interaction between beta-CTF and TMEM30A was found to suppress lipid flippase formation and activity in AD models.
  • The T-RAP peptide, derived from the TMEM30A binding site, ameliorated endosomal anomalies.
  • These improvements are likely due to the restoration of lipid flippase activity.

Conclusions:

  • The study elucidates the mechanism of vesicular traffic impairment in AD involving beta-CTF and TMEM30A.
  • TMEM30A and its lipid flippase activity represent a potential therapeutic target for Alzheimer's disease.
Keywords:
BiochemistryBiological sciencesNeuroscience

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