Organoid Culture from Metastatic Colorectal Cancer Biopsies with Genetic Validation
Source Weeber et al., 2015 · The Netherlands Cancer Institute · 10.1073/pnas.1516689112
Abstract
This protocol describes the derivation and culture of 3D organoids from metastatic colorectal cancer biopsies with a reported success rate of 71%. The method includes tissue embedding, selective culture medium optimization, and validates that organoid cultures preserve the mutational and copy number landscape of the original tumor, making them suitable for personalized cancer screening and treatment selection.
Protocol overview
20 steps across 6 phases
- 1 Patient Consent and IRB Approval
- 2 Tumor Biopsy Collection
- 3 Blood Draw for Germline Control
- 1 Tissue Dissection and Matrigel Embedding
- 2 Overlay with Growth Medium
- 3 Initial Culture Period
- 1 Medium Changes
- 2 Organoid Passaging — Mechanical and Enzymatic Disruption
- 3 Continue Culture to 2–3 Months
- 1 DNA Isolation from Organoids
- 2 DNA Isolation from Tumor Biopsy and Blood
- 3 Quantify and Assess DNA Quality
- 1 Generate Barcoded Fragment Libraries
- 2 Genomic Enrichment Using SureSelect
- 3 Sequence Using SOLiD 5500xl System
- 4 Mapping, Variant Calling, and Annotation
- 1 Generate Copy Number Profiles from BAM Files
- 2 Normalize and Analyze Read Counts
- 3 Circular Binary Segmentation (CBS) and CGHcall Analysis
- 4 Calculate Correlation and Overlap Metrics
Full SOP
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Attribution
This SOP was authored by Organthis based on the published method in Weeber et al., 2015. The originating laboratory holds no rights in this SOP and has not endorsed it unless marked Verified.
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