Surface modification of magnetite nanoparticles using lactobionic acid and their interaction with hepatocytes

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Radiology

Background:

• Superparamagnetic magnetite nanoparticles are investigated for biomedical applications.
• Targeting specific cells like hepatocytes is crucial for diagnostic imaging.
• Surface modification can enhance nanoparticle properties for improved cellular interaction.

Purpose of the Study:

• To develop lactobionic acid (LA)-modified magnetite nanoparticles for enhanced hepatocyte targeting and intracellular uptake.
• To evaluate the efficacy of LA-modified nanoparticles as a contrast agent for liver diagnosis using magnetic resonance (MR) imaging.

Main Methods:

• Surface modification of superparamagnetic magnetite nanoparticles with lactobionic acid (LA).
• Synthesis of maltotrionic acid (MA)-modified nanoparticles as a control.
• In vitro cell culture experiments to assess nanoparticle uptake by hepatocytes.
• Atomic absorption spectrometry (AAS) to quantify nanoparticle uptake.
• In vivo MR imaging in rabbits to evaluate nanoparticle accumulation in hepatocytes.

Main Results:

• LA-modified nanoparticles demonstrated significantly higher intracellular uptake into hepatocytes compared to unmodified and MA-modified nanoparticles.
• In vivo MR imaging revealed selective accumulation of LA-coated nanoparticles onto hepatocytes in rabbits.
• The enhanced uptake and targeting suggest improved performance for diagnostic applications.

Conclusions:

• Lactobionic acid surface modification effectively enhances the targeting and uptake of superparamagnetic magnetite nanoparticles by hepatocytes.
• LA-modified magnetite nanoparticles show significant potential as an effective contrast agent for liver diagnosis.
• This approach offers a promising strategy for developing targeted nanoparticle-based diagnostic tools for liver diseases.