Organoid cultures recapitulate esophageal adenocarcinoma heterogeneity providing a model for clonality studies and precision therapeutics
Source Li et al., 2018 · MRC Cancer Unit, University of Cambridge · 10.1038/s41467-018-05190-9
Abstract
This protocol describes the derivation and characterization of three-dimensional esophageal adenocarcinoma (EAC) organoid cultures from primary patient tissue. The organoids recapitulate the morphological, genomic, and transcriptomic landscape of the primary tumor including clonal heterogeneity and mutational signatures, enabling studies of clonal evolution and drug sensitivity testing for precision medicine strategies.
Protocol overview
35 steps across 8 phases
- 1 Tissue collection and wash
- 2 Tissue mincing
- 3 Collagenase digestion
- 4 Filtration to remove undigested fragments
- 5 Cell pellet collection and washing
- 1 Preparation of BME-2 culture matrix
- 2 Plating cells in BME-2 droplets
- 3 BME-2 polymerization
- 4 Initial culture incubation
- 1 Complete culture medium preparation
- 2 Medium refreshment schedule
- 1 BME-2 disassociation
- 2 Organoid collection and enzyme treatment
- 3 Vigorous manual shake and centrifugation
- 4 Cell pellet resuspension and re-plating
- 1 Organoid fixation and embedding
- 2 Paraffin sectioning
- 3 Hematoxylin and Eosin (H&E) staining
- 4 Immunohistochemistry (IHC) staining
- 1 Organoid fixation for immunofluorescence
- 2 Permeabilization
- 3 Quenching and primary antibody incubation
- 4 Secondary antibody and marker staining
- 5 Confocal imaging
- 1 Colcemid treatment to arrest metaphase cells
- 2 Cell harvest and dissociation
- 3 Hypotonic treatment
- 4 Fixation and storage
- 5 M-FISH probe preparation and hybridization
- 6 Imaging and karyotyping
- 1 Organoid preparation and plating
- 2 Drug compound dispensing
- 3 Drug incubation
- 4 Cell viability assessment
- 5 Luminescence measurement and data analysis
Full SOP
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Attribution
This SOP was authored by Organthis based on the published method in Li et al., 2018. The originating laboratory holds no rights in this SOP and has not endorsed it unless marked Verified.
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