Targeted fluorescence imaging enhanced by 2D materials: a comparison between 2D MoS2 and graphene oxide

Area of Science:

• Nanotechnology
• Materials Science
• Biomedical Imaging

Background:

• Fluorophore-labelled ligands are crucial for receptor targeting and biological imaging.
• Existing nanomaterials like graphene oxide have limitations in working concentration ranges.
• Developing novel nanomaterials is essential for improving imaging sensitivity and specificity.

Purpose of the Study:

• To investigate the potential of two-dimensional molybdenum disulfide (2D MoS2) as an enhancer for receptor-targeting ligands.
• To compare the imaging capabilities of 2D MoS2-enhanced ligands with those enhanced by graphene oxide.
• To evaluate the working concentration range and imaging performance of 2D MoS2 in biological samples.

Main Methods:

• Synthesis and characterization of 2D MoS2 nanosheets.
• Conjugation of 2D MoS2 with fluorophore-labelled ligands.
• In vitro cell imaging experiments.
• Ex vivo tissue imaging experiments.
• Comparative analysis with graphene oxide-based systems.

Main Results:

• 2D MoS2 significantly enhanced the receptor-targeting efficiency of the labelled ligand.
• The 2D MoS2 system exhibited a broader and more effective working concentration range than graphene oxide.
• Improved resolution and signal-to-noise ratio were observed in both cell and tissue imaging using 2D MoS2.
• Demonstrated enhanced working concentration range for 2D MoS2 compared to graphene oxide.

Conclusions:

• 2D MoS2 is a promising nanomaterial for enhancing the performance of receptor-targeting ligands in biomedical imaging.
• The superior working concentration range of 2D MoS2 leads to improved imaging of cellular and tissue structures.
• This study highlights the potential of 2D MoS2 for advanced diagnostic and research applications.