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Updated: Feb 13, 2026
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Cell Labeling and Targeting with Superparamagnetic Iron Oxide Nanoparticles
Published on: October 19, 2015
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Surface functionalization dependent subcellular localization of Superparamagnetic nanoparticle in plasma membrane and
Deepak B Thimiri Govinda Raj1,2, Niamat Ali Khan3
1Envirotransgene® Bio-solutions Global Chennai, Tamil Nadu, India.
Nano Convergence
|March 2, 2018
Summary
We developed a novel method using functionalized superparamagnetic iron oxide nanoparticles (SPMNPs) for efficient subcellular fractionation. This technique enables high-purity isolation of organelles like plasma membranes, endosomes, and lysosomes.
Area of Science:
- Biotechnology
- Cell Biology
- Nanotechnology
Background:
- Superparamagnetic nanoparticles (SPMNPs) offer unique magnetic properties for biological applications.
- Subcellular fractionation is crucial for understanding organelle function but faces challenges in purity and yield.
- Surface modification of nanoparticles is key to controlling their biological interactions and localization.
Purpose of the Study:
- To develop and validate a novel method for subcellular fractionation using surface-functionalized SPMNPs.
- To investigate the influence of surface functionalization on SPMNP localization within cellular compartments.
- To demonstrate the utility of SPMNPs for high-purity, high-yield organelle isolation.
Main Methods:
- Synthesis of Fe3O4 superparamagnetic nanoparticles (SPMNPs) via thermal decomposition.
- Surface functionalization of SPMNPs with phospholipids and dimercaptosuccinic acid.
- Application of functionalized SPMNPs in pulse-chase experiments for subcellular localization and organelle fractionation.
Main Results:
- Surface functionalization dictated SPMNP localization within specific subcellular compartments (plasma membrane, endosomes, lysosomes).
- SPMNP-based fractionation achieved high purity and high yield of isolated organelles.
- Demonstrated successful application of SPMNPs as a complementary tool for cell biology research.
Conclusions:
- Surface-functionalized SPMNPs provide a powerful and versatile technology for subcellular fractionation.
- This method enhances the isolation of specific organelles, complementing existing techniques.
- Future applications include protein and protein complex purification from isolated magnetic organelles.
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