Multiplex Immunohistochemistry Solution for Human Colorectal Cancer Organoids

Comprehensive mIHC Workflow for Cancer Stemness, Epithelial Identity, and Tumor Microenvironment Profiling in FFPE Organoid Models

Unlock Spatial Insights into colorectal Cancer Organoid Biology with High‑Performance Tyramide Signal Amplification‑Based Multiplex Detection

Human cancer organoids preserve key architectural and molecular characteristics of primary tumors, providing a powerful model system for studying tumor heterogeneity, cancer stem cell populations, epithelial differentiation, and epithelial‑mesenchymal transition (EMT).

Our FFPE‑compatible multiplex immunohistochemistry (mIHC) solution enables simultaneous visualization of multiple biomarkers within human colorectal cancer organoid sections, combining high‑sensitivity Tyramide Signal Amplification signal amplification technology, validated antibodies, optimized detection reagents, and workflow‑compatible consumables.

The ALDH1A1/EpCAM/CK20/LGR5/Vimentin biomarker panel provides comprehensive characterization of:

• Cancer stem‑like cell populations
• Epithelial tumor identity
• Differentiation status
• EMT‑associated phenotypes
• Tumor heterogeneity and spatial organization

Application Overview

Spatial Profiling of colorectal Cancer Organoids Using a 5‑Plex Biomarker Panel

Recommended Marker Combination

Biomarker	Biological Significance	Research Application
ALDH1A1	Cancer stem cell‑associated marker	Identification of stem‑like tumor cell populations
EpCAM	Epithelial cell adhesion molecule	Identification of epithelial tumor compartments
CK20	Colorectal epithelial differentiation marker	Assessment of intestinal lineage and tumor differentiation
LGR5	Intestinal stem cell and colorectal cancer stem cell marker	Evaluation of tumor initiation and stemness
Vimentin	Mesenchymal marker	Detection of EMT and invasive phenotypes

Multiplex immunohistochemistry (mIHC) staining of ALDH1A1, EpCAM, CK20, LGR5 and Vimentin in human colorectal cancer organoids, which enables researchers to investigate the relationship between stemness, epithelial differentiation, and mesenchymal transition within the same spatial context.

Representative 5‑Plex 6 color mIHC staining images of human colorectal cancer organoids, which was performed using the 5‑Plex mIHC Assay Kit (WT0018‑50) to detect the expression and spatial distribution of ALDH1A1 (WR4410, 1:500, 435 nm), EpCAM (WR4145, 1:500, 488 nm), CK20 (WR4329, 1:500, 525 nm), LGR5 (WR5199, 1:500, 594 nm), and Vimentin (WR4297, 1:500, 680 nm), and all above imaging data were acquired via the 3D‑Histech digital pathology scanning system. Scale bar = 50 μm.

EpCAM (85.94%) > CK20 (61.67%) ≈ ALDH1A1 (57.34%) > Vimentin (33.54%) > LGR5 (27.36%), which is biologically consistent consistent with a heterogeneous but predominantly epithelial CRC organoid model, rather than a purely differentiated epithelial culture or a fully mesenchymal tumor.

The dominant EpCAM⁺ epithelial population (85.94%), together with substantial CK20⁺ differentiation (61.67%), demonstrates preservation of colorectal epithelial identity. At the same time, the high ALDH1A1⁺ fraction (57.34%) and distinct LGR5⁺ population (27.36%) indicate coexistence of multiple stemness‑associated cellular states. The presence of 33.54% Vimentin⁺ cells further suggests substantial epithelial–mesenchymal plasticity or partial EMT.

Overall, these organoids are best characterized as a heterogeneous CRC model containing epithelial, differentiated, stem‑like, and EMT‑associated cellular subpopulations. This is consistent with the established literature showing that colorectal cancer organoids can retain both tumor characteristics and cellular heterogeneity of the parental cancer.

A substantial EpCAM⁺CK20⁺ population (52.55%) demonstrated preservation of epithelial identity and colorectal differentiation. In contrast, the limited ALDH1A1⁺LGR5⁺ overlap (11.90%) suggested that stemness‑associated features were distributed across partially distinct cellular subpopulations rather than a single homogeneous cancer stem‑cell compartment. Furthermore, a substantial EpCAM⁺Vimentin⁺ population (39.03%) indicated the presence of hybrid epithelial‑mesenchymal cellular states, consistent with epithelial‑mesenchymal plasticity. Collectively, these findings suggest that the colorectal cancer organoids preserve differentiation, heterogeneous stemness, and phenotypic plasticity, supporting their value as a representative model of colorectal cancer heterogeneity.

Complete Multiplex Immunohistochemistry Solution

1. mIHC Fluorescence Amplification System

High‑Sensitivity Signal Enhancement for Multiplex Biomarker Detection

Our Tyramide Signal Amplification‑based fluorescence amplification solution provides:

• Strong signal amplification for low‑abundance biomarkers
• High fluorescence intensity with minimal background
• Excellent compatibility with FFPE tissue sections
• Sequential multiplex staining capability
• Reliable performance across automated and manual workflows

Recommended Tyramide Signal Amplification Workflow Components

ProductCategory	CatalogNo.	ProductName
mIHC Kits	WT0018	5‑Plex mIHC Assay Kit (6‑color, Anti‑Rabbit Secondary Antibody）
Fluorescence Amplification Reagents	WT1001	Antibody Diluent (IHC)
Antigen Retrieval	WT1003	Citrate Antigen Retrieval Buffer (pH 6.0)(20X)
	WT1004	TRIS‑EDTA Antigen Retrieval Buffer (pH 9.0)(20X)
	WT1005	Citrate Antigen Retrieval Buffer (for automated IHC stainer) (pH 6.0)(20X)
	WT1006	TRIS‑EDTA Antigen Retrieval Buffer (for automated IHC stainer) (pH 9.0)(20X)
	WT1007	One‑step Deparaffinization Antigen Retrieval Solution (pH 6.0)(20X)
	WT1008	One‑step Deparaffinization Antigen Retrieval Solution (pH 9.0)(20X)
Antibody Stripping	WT1010	High‑Temperature Antibody Stripping Buffer(20X)
	WT1011	Mild Antibody Stripping Buffer
Mounting	WT1012	Anti‑Fade DAPI Mounting Buffer (One‑Step)
Inactivation & Blocking	WT1013	One‑Step Inactivation & Blocking Solution (For Auto IHC Stainer)

2. Primary Antibody Portfolio

Validated Antibodies for colorectal Cancer Organoid Phenotyping

A carefully optimized antibody panel is essential for reliable mIHC performance.

Recommended Primary Antibody Panel

Biomarker	Catalog No.	Product Name	Application	Species reactivity	Recommended mIHC dilution
ALDH1A1	WR4410	U‑Blot® ALDH1A1 Rabbit mAb	WB,mIHC,IHC‑P,IF/ICC,IP,ELISA	Human,Mouse,Rat	1:500
EpCAM	WR4145	U‑Blot® EpCAM Rabbit mAb	WB,mIHC,IHC‑P,IF/ICC,IP,ELISA	Human,Mouse,Rat	1:500
CK20	WR4329	U‑Blot® CK20 Rabbit mAb	WB,mIHC,IHC‑P,IF/ICC,IP,ELISA	Human,Mouse,Rat	1:500
LGR5	WR5199	U‑Blot® LGR5 Rabbit mAb	WB,mIHC,IHC‑P,IF/ICC,IP,ELISA	Human,Mouse,Rat	1:500
Vimentin	WR4297	U‑Blot® Vimentin Rabbit mAb	WB,mIHC,IHC‑P,IF/ICC,IP,ELISA	Human,Mouse,Rat	1:500

3. Secondary Antibody Solutions

Optimized Detection Reagents for Multiplex Fluorescence Imaging

Our secondary antibody portfolio supports high‑quality fluorescence‑based detection:

Features

• High affinity and low background
• Multiple host species compatibility
• Broad fluorophore selection
• Excellent Tyramide Signal Amplification workflow compatibility

Recommended options:

• HRP‑conjugated secondary antibodies
• Species‑specific secondary antibodies
• Polymer‑based detection systems

4. Auxiliary Reagents

Complete Workflow Support from Sample Preparation to Imaging

Reliable mIHC performance requires optimized supporting reagents.

Sample Preparation

Products include:

• FFPE tissue deparaffinization reagents
• Antigen retrieval buffers
• Tissue permeabilization solutions
• Endogenous enzyme blocking reagents
• Matrigel

Staining Optimization

Products include:

• Protein blocking buffers
• Antibody dilution buffers
• Washing solutions
• Mounting media

Fluorescence Preservation

Products include:

• Antifade mounting medium
• Nuclear counterstaining reagents
• Fluorescence preservation solutions

5. Consumables and Workflow Accessories

Reliable Tools for Consistent mIHC Performance

Recommended consumables:

• Pipette tips and reservoirs
• Microcentrifuge Tubes

Key Advantages

Why Choose Our colorectal Cancer Organoid mIHC Solution?

• Complete Workflow Integration
  From antibodies to Tyramide Signal Amplification reagents and consumables, every component is designed for compatibility.
• High Sensitivity Detection
  Tyramide Signal Amplification amplification enables visualization of low‑expression biomarkers in complex tumor models.
• Multiparameter Spatial Profiling
  Analyze multiple biological pathways simultaneously within a single FFPE section.
• Reproducible Research Results
  Optimized reagents support consistent staining quality across experiments.
• Flexible Biomarker Expansion
  The platform can be customized for additional oncology, immunology, and stem cell markers.
• Optimized experimental procedure
  One‑step dewaxing and antigen retrieval, as well as integrated one‑step DAPI counterstaining and anti‑fade mounting, enhanced your research efficiency

Applications

Suitable for:

• colorectal cancer organoid characterization
• Cancer stem cell research
• Tumor heterogeneity studies
• EMT mechanism investigation
• Drug response evaluation
• Translational oncology research
• Spatial biology applications

Advance Your colorectal Cancer Organoid Research with Precision Multiplex Imaging

• Our integrated mIHC solution provides researchers with the tools needed to transform complex tumor organoid models into actionable spatial insights.
• From biomarker selection to fluorescence imaging, we deliver a complete workflow designed for reliable, high‑quality multiplex analysis.