Qualitative and Quantitative Analysis of Tumor Cell Invasion Using Au Clusters

Area of Science:

• Biochemistry
• Nanotechnology
• Oncology

Background:

• Tumor invasion and metastasis are primary causes of cancer-related mortality.
• Membrane type-1 matrix metalloproteinase (MT1-MMP) is a key factor in tumor invasion and metastasis.
• Accurate methods are needed to quantify MT1-MMP expression for assessing cancer aggressiveness.

Purpose of the Study:

• To develop a simple, precise, and quantitative method for distinguishing MT1-MMP expression levels in human cervical cancer cells.
• To assess the potential of this method for diagnosing aggressive tumor cells and evaluating invasion/metastasis risk.

Main Methods:

• Construction of red fluorescent gold (Au) clusters with peroxidase-like properties for specific binding to MT1-MMP.
• Qualitative imaging of MT1-MMP on cancer cells using fluorescence microscopy and catalytic color imaging.
• Quantitative analysis of MT1-MMP using inductively coupled plasma mass spectrometry (ICP-MS).

Main Results:

• Red fluorescent Au clusters specifically labeled MT1-MMP on human cervical cancer cells (Siha, Caski, Hela).
• Successful visual detection of MT1-MMP via fluorescence and catalytic imaging.
• Accurate quantification of MT1-MMP amounts using ICP-MS.
• Distinguished invasion/metastasis capabilities of different cancer cell lines based on MT1-MMP levels.

Conclusions:

• The developed Au clusters provide a dual qualitative/quantitative analysis method for tumor-associated proteins.
• This approach enables accurate diagnosis of aggressive tumor cells and assessment of their invasion/metastasis risk.
• The method holds significant potential for clinical applications in oncology.