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Updated: Jan 12, 2026
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Generation of 3D Tumor Spheroids for Drug Evaluation Studies
Published on: February 24, 2023
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Protocol for 3D tumor spheroid generation, immunostaining, and imaging through comparative approaches.
Atanu Mondal1, Sandhik Nandi1, Bipasa Mandal1
1Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, Mumbai, India.
STAR Protocols
|November 1, 2025
Summary
This study details a protocol for generating 3D tumor spheroids and performing immunolabeling to study protein localization. The method ensures high-quality imaging for analyzing protein distribution in complex 3D models.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Cancer Research
Background:
- 3D tumor spheroids mimic in vivo conditions for biological studies.
- Accurate protein localization analysis is crucial for understanding tumor progression.
- Existing methods may lack comprehensive protocols for 3D spheroid imaging.
Purpose of the Study:
- To present a detailed protocol for 3D tumor spheroid generation.
- To describe immunolabeling strategies for studying protein localization within spheroids.
- To provide guidance for high-quality imaging and analysis of 3D protein distribution.
Main Methods:
- Spheroid formation and embedding in support matrices.
- Optimized immunostaining procedures, including antigen retrieval.
- Image acquisition and quantitative analysis techniques for 3D structures.
Main Results:
- A robust protocol for generating reproducible 3D tumor spheroids.
- Demonstrated success in maintaining spheroid cytoarchitecture during processing.
- Achieved consistent antibody penetration and signal detection for protein localization.
Conclusions:
- The presented protocol facilitates detailed 3D protein localization studies in tumor spheroids.
- This method supports researchers in selecting optimal imaging approaches for complex biological models.
- Enables enhanced understanding of in vivo-like protein distribution in cancer research.
