Patient-derived tumor organoids from malignant brain tumors for precision drug testing
Source Chen et al., 2022 · China Medical University Hospital, Taichung, Taiwan · 10.1038/s41598-022-20487-y
Abstract
This protocol describes the generation and culture of patient-derived organoids (PDOs) from surgically resected malignant brain tumor tissues, including primary gliomas, meningiomas, lymphomas, and brain metastases. Tumor tissues are dissociated and cultured in serum-free medium on ultra-low attachment plates with orbital agitation, producing three-dimensional organoids within 2 weeks that recapitulate tumor histopathology and can be used for functional drug-response screening to guide personalized therapeutic decisions.
Protocol overview
31 steps across 6 phases
- 1 Obtain surgical tumor specimens
- 1 Prepare ultra-low attachment culture plates with PDO medium
- 2 Seed tumor tissue pieces into culture plates
- 3 Set up orbital shaker in incubator
- 4 Perform first medium change
- 5 Continue medium changes every 48 hours
- 6 Monitor organoid development
- 1 Collect organoid samples for H&E staining
- 2 Embed organoids in paraffin
- 3 Cut thin tissue sections
- 4 Perform hematoxylin and eosin (H&E) staining
- 5 Perform immunohistochemistry (IHC) for GFAP
- 6 Examine and compare histopathological features
- 1 Assess organoid size and viability
- 2 Dissect organoids into smaller pieces
- 3 Transfer dissected organoid pieces to fresh medium
- 4 Continue culture maintenance
- 1 Prepare organoids for drug testing
- 2 Add test drug to organoid cultures
- 3 Add BrdU labeling reagent
- 4 Centrifuge and dry microplate
- 5 Fix organoids in FixDenat solution
- 6 Incubate with anti-BrdU-POD antibody
- 7 Wash wells and add substrate
- 8 Terminate reaction and measure absorbance
- 9 Normalize BrdU data by organoid diameter
- 1 Treat organoids with drug and incubate
- 2 Wash organoids with PBS
- 3 Stain with Hoechst 33342 and propidium iodide
- 4 Image organoids by fluorescence microscopy
- 5 Quantify and analyze cell death
Full SOP
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Attribution
This SOP was authored by Organthis based on the published method in Chen et al., 2022. The originating laboratory holds no rights in this SOP and has not endorsed it unless marked Verified.
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