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Updated: May 21, 2025
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Method to Visualize and Analyze Membrane Interacting Proteins by Transmission Electron Microscopy
Published on: March 5, 2017
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Structural Changes in Membrane Dynamics under the Action of Miltefosine
Irina Georgieva1, Sonia Apostolova1, Teodora Vukova1
1Transmembrane Signaling Laboratory, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
Discovery Medicine
|March 21, 2025
Summary
Miltefosine, an anticancer drug, reduces cancer cell membrane fluidity, decreasing viability. This alkylphosphocholine shows potential as an antitumor agent, possibly for adjuvant therapy.
Area of Science:
- Biochemistry
- Cell Biology
- Pharmacology
Background:
- Miltefosine (hexadecylphosphocholine, HePC) is an alkylphosphocholine impacting cell membrane lipid metabolism and signaling.
- This study investigates HePC's effects on membrane lipid content, fluidity, and cancer cell metastasis.
Purpose of the Study:
- To determine the impact of miltefosine on membrane lipid composition and fluidity in human lung adenocarcinoma (A549) cells and normal human umbilical vein endothelial cells (HUVECs).
- To assess the relationship between miltefosine-induced membrane changes and cancer cell metastatic potential.
Main Methods:
- Membrane fluidity was assessed using fluorescence recovery after photobleaching (FRAP) analysis.
- Cell viability was measured via MTT assay.
- Total cholesterol and sphingomyelin levels were quantified using commercial kits.
Main Results:
- Miltefosine inhibited cell growth and increased total cholesterol in both A549 and HUVEC cell lines.
- HePC significantly reduced membrane fluidity in A549 cells, evidenced by decreased diffusion coefficients and increased fluorescent recovery half-time.
- A milder reduction in membrane fluidity was observed in HUVECs, with no significant change in sphingomyelin levels in A549 cells.
Conclusions:
- Miltefosine decreases cancer cell membrane fluidity, correlating with reduced cell viability and altered cholesterol levels.
- The findings suggest miltefosine's potential as an effective antitumor agent and adjuvant therapy.
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