TRIPODD Enables Single-Cell Quantification of Therapeutic Efficacy
Nathan P McMahon, Allison Solanki, Antonio R Montaño
1Biomedical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, United States.
Molecular Pharmaceutics
|February 17, 2026
Summary
We developed a novel imaging platform, TRIPODD, to analyze single-cell drug response and resistance in tumors. This technology quantifies drug distribution and therapeutic effects, aiding personalized cancer therapy development.
Area of Science:
- Oncology
- Pharmacology
- Biomedical Imaging
Background:
- Targeted therapies like tyrosine kinase inhibitors (TKIs) improve cancer survival but often face transient responses due to tumor resistance.
- Existing methods lack spatial resolution for quantitative analysis of drug delivery and response mechanisms.
- Personalized cancer therapy requires understanding drug action and resistance at a single-cell level within the tumor microenvironment.
Purpose of the Study:
- To evaluate the utility of the Therapeutic Response Imaging through Proteomic and Optical Drug Distribution (TRIPODD) platform for assessing single-cell response to epidermal growth factor receptor (EGFR) TKI therapy.
- To demonstrate TRIPODD's capability in quantifying drug delivery and therapeutic response within the spatial context of a tumor.
- To identify single-cell signatures of therapeutic response and resistance to EGFR-TKI treatment.
Main Methods:
- Application of the quantitative fluorescence imaging platform, TRIPODD, to EGFR-TKI-sensitive non-small cell lung cancer (NSCLC) xenografts.
- Quantification of erlotinib accumulation and engagement at the single-cell level within the tumor.
- Analysis of spatial drug distribution and its correlation with therapeutic response and resistance.
Main Results:
- TRIPODD successfully quantified the therapeutic response of NSCLC xenografts to erlotinib.
- Unique single-cell signatures of therapeutic response were identified, linked to erlotinib accumulation and engagement.
- The study demonstrated the platform's ability to evaluate treatment response and resistance in heterogeneous tumors at the single-cell level.
Conclusions:
- The TRIPODD platform provides a quantitative, spatially resolved method for evaluating single-cell drug response and resistance.
- TRIPODD enables a mechanistic understanding of drug delivery and therapeutic effects, crucial for personalized cancer therapy.
- This technology holds promise for advancing the development and application of targeted cancer therapies by revealing treatment dynamics within heterogeneous tumors.
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