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Updated: May 30, 2025
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In vivo Dual Substrate Bioluminescent Imaging
Published on: October 11, 2011
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Activity-Based Bioluminescent Logic-Gate Probe Reveals Crosstalk Between the Inflammatory Tumor Microenvironment and
Chelsea B Swartchick1, Musa Dirak1, Lily C F Wenger1
1Department of Chemistry, Beckman Institute for Advanced Science and Technology, and Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States.
JACS Au
|January 31, 2025
Summary
Researchers developed AlDeLuc, a novel bioluminescence probe, to precisely detect aldehyde dehydrogenase 1A1 (ALDH1A1) high-expressing cancer cells. This tool aids in understanding tumor progression and the link between obesity, inflammation, and cancer.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- High aldehyde dehydrogenase 1A1 (ALDH1A1) expression in cancer cells correlates with chemotherapy resistance, tumor progression, and poor clinical outcomes.
- ALDH1A1 protects cells from reactive aldehydes and regulates stem cell differentiation via retinoic acid signaling.
- Limited in vivo methods exist for studying ALDH1A1 high-expressing cancer cells.
Purpose of the Study:
- To develop a novel tool for selective in vivo detection of ALDH1A1 activity in cancer cells.
- To investigate the influence of tumor inflammation and high-fat diet on ALDH1A1 high-expressing cell populations.
- To establish a molecular link between obesity, inflammation, and cancer progression.
Main Methods:
- Development of AlDeLuc, a logic-gated bioluminescence probe activated by acidic intracellular compartments and ALDH1A1.
- Validation of AlDeLuc in various cancer cell lines and a murine breast cancer model.
- Application of AlDeLuc to assess ALDH1A1 activity in tumors influenced by dietary factors and inflammation.
Main Results:
- AlDeLuc demonstrated selective and precise detection of ALDH1A1 high-expressing cells, minimizing off-target signals.
- The probe successfully evaluated ALDH1A1 activity in vitro and in vivo.
- AlDeLuc revealed that tumor inflammation, exacerbated by a high-fat diet, influences the ALDH1A1 high-expressing cell population.
Conclusions:
- AlDeLuc is the first logic-gated bioluminescence probe for specific evaluation of ALDH1A1 activity in tumor cells.
- The study establishes a molecular connection between obesity, inflammation, and cancer progression.
- This work provides a valuable tool for cancer research and understanding ALDH1A1's role in disease.
