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Updated: May 21, 2026

Biofunctionalization of Magnetic Nanomaterials

Biofunctionalization of Magnetic Nanomaterials

Published on: July 16, 2020

A facile, one-step nanocarbon functionalization for biomedical applications.

Magdalena Swierczewska¹, Ki Young Choi, Edward L Mertz

¹Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States.

|June 15, 2012

Summary

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Hyaluronic acid-based biosurfactants effectively disperse single-walled carbon nanotubes (SWCNTs) and target CD44 receptor-positive tumor cells. This approach enhances nanocarbon biomedical applications through improved tumor targeting and imaging.

Area of Science:

Biomedical Engineering
Nanotechnology
Materials Science

Background:

Carbon nanomaterials, like single-walled carbon nanotubes (SWCNTs), show promise in biomedicine but face challenges with dispersion and in vivo activity.
Targeting specific cells and improving biocompatibility are crucial for advancing nanocarbon applications.

Purpose of the Study:

To develop a single-agent strategy for dispersing SWCNTs and targeting them to CD44 receptor-positive tumor cells.
To evaluate the efficacy of hyaluronic acid-based biosurfactants for SWCNT delivery and in vivo imaging.

Main Methods:

Utilized a multifunctional hyaluronic acid-based biosurfactant for SWCNT dispersion and CD44 receptor targeting.
Monitored cellular uptake via enzyme-activated fluorescence and confirmed SWCNT localization using Raman mapping.

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Employed in vivo photoacoustic, fluorescence, and positron emission tomography imaging to assess tumor targeting and enzyme activity.

Main Results:

The hyaluronic acid biosurfactant successfully dispersed SWCNTs and facilitated prompt uptake by CD44-positive tumor cells.
In vivo imaging demonstrated high tumor targeting capability and enabled long-term fluorescence molecular imaging of enzyme events.
The single-agent approach simplified SWCNT bioconjugation, enhancing their biomedical potential.

Conclusions:

A facile, single-biomaterial surfactant technique effectively disperses SWCNTs and targets them to tumors.
This method overcomes dispersion and targeting challenges, paving the way for advanced nanocarbon biomedical applications.
Hyaluronic acid-based biosurfactants offer a promising platform for in vivo nanomedicine and molecular imaging.