We present a protocol to generate single cell-seeded patient-derived intestinal organoids, providing standardized cultures that reduce heterogeneity and improve reproducibility for downstream assays and precision medicine applications.
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Method Article
We present a protocol to generate single cell-seeded patient-derived intestinal organoids, providing standardized cultures that reduce heterogeneity and improve reproducibility for downstream assays and precision medicine applications.
Recent developments in organoid technology have enabled the creation of patient-derived intestinal organoids (PDIOs) that recapitulate the structural, functional, genetic, and epigenetic features of their original tissues. However, conventional passage-derived organoids inevitably yield heterogeneous populations in size and number, leading to inconsistent results even under identical conditions. To address this, a standardized approach, referred to here as "single cell-seeded PDIOs," was established. In this method, mature PDIOs were enzymatically dissociated into single cells and seeded at a defined number into individual wells of a 96-well plate. This controlled seeding normalized the size and number of PDIOs. Compared with passage-derived organoids, single cell-seeded PDIOs displayed reduced inter-well variability in organoid numbers and intra-well variability in organoid sizes, which enables the determination of generation efficiency and improves the reproducibility of viability assays. Moreover, this platform is compatible with downstream analysis, including transcriptomic analysis and protein expression profiling. Collectively, this approach may enhance experimental consistency and provide a practical foundation for reproducible PDIO-based studies.
The human intestine is a highly complex ecosystem defined by finely tuned interactions among gut microbiota, intestinal epithelium, and the immune system1. These components maintain intestinal homeostasis through tightly regulated signaling networks. For instance, the gut microbiota, comprising over ten trillion microbial organisms, interacts with immune cells to modulate the activity of the immune system and maintains a balanced intestinal environment2. The intestinal epithelium is instrumental in mediating this microbiota-immune system crosstalk3,4. Intestinal stem cells (ISCs), the key driver of epithelial renewal, continuously regenerate and differentiate into specialized cell types, including secretory cell lineages (Paneth cells, goblet cells, enteroendocrine cells, and Tuft cells), absorptive enterocytes, and microfold cells5,6. Together, these cells form a vital physical barrier and functional interface that protects the host against inflammatory stimuli.
In recent years, PDIOs have emerged as a powerful platform in translational research7. These three-dimensional (3D) cultures are created from ISCs isolated from patient tissues and maintained in an extracellular matrix such as extracellular matrix (ECM), along with defined growth factors that recapitulate the ISC niche8,9. Notably, PDIOs retain the genetic and epigenetic characteristics of the donor tissue, allowing sustained expansion and reproducible experimentation. Since Sato et al. first developed PDIOs from leucine-rich repeat-containing G protein-coupled receptor 5+ (Lgr5⁺) ISCs10, subsequent studies have identified essential growth factors for the generation and differentiation of PDIOs, leading to widely adopted protocols across laboratories11,12,13. However, the experimental settings used to treat PDIOs with candidate drugs vary considerably across the studies and are often insufficiently described14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47. Furthermore, PDIOs are typically passaged by mechanical disruption, resulting in heterogeneity in organoid size, morphology, and spatial arrangement. This variability complicates the accurate assessment of drug responsiveness and underlying molecular mechanisms. To address this limitation, recent studies have developed PDIOs derived from single cell-suspension or sorted single cells45,48,49,50,51,52,53,54.
In this article, as one of the complementary and practical methods, "single cell-seeded PDIOs" is introduced to generate standardized PDIOs from a single cell suspension using conventional ECM and media, enabling accurate and reproducible assays. Briefly, single cells isolated from the mature PDIOs were embedded in ECM at defined cell densities, and the resulting cultures were monitored over 2 weeks while number, size, and morphology were quantified. Because each ECM dome is embedded with a known cell input, the organoid count per well is consistent, allowing generation efficiency to be calculated as a readout for regenerative capacity in each organoid line49,54. Although the dome-shaped Matrigel produces size heterogeneity due to the spatial gradient of Wnt3a concentration arising from its inherent instability and limited diffusion55, inter-well size variability in single cell-seeded PDIOs is markedly lower than in passage-derived organoids49,54. However, this approach still has practical limitations. Without fluorescence-activated cell sorting, some organoids may be generated from doublets or triplets, resulting in intrinsic biological heterogeneity within PDIOs. Also, the optimal number of single cells must be empirically determined for each organoid line due to varied generation efficiencies. Finally, fully differentiated single cell-seeded PDIOs were subjected to downstream analyses including quantitative reverse transcription PCR (qRT-PCR), Western blot, and immunohistochemistry.
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All materials and reagents required for the experiment are listed in the Table of Materials.
1. Preparation of reagents and materials
2. Thawing and recovery of cryopreserved PDIOs
3. Passaging of PDIOs
4. Single cell-seeded PDIO culture
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To generate single cell-seeded PDIOs, mucosal pinch biopsies of the terminal ileum and the ascending colon were collected from consenting healthy subjects during surveillance colonoscopy using 2.8 mm standard biopsy forceps, under the NYU Grossman School of Medicine Institutional Review Board (Mucosal Immune Profiling in Patients with Inflammatory Bowel Disease; S12-01137). Then, single cell-seeded PDIOs were generated by dissociating 6,000 cells isolated from mature PDIOs into the ECM, followed by culturing in DIF. The ...
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PDIOs hold immense promise for precision disease modeling, drug screening, and regenerative medicine, as they faithfully preserve the genetic and epigenetic landscape of individual patients. However, their practical applications are often hampered by difficulties in standardizing organoid generation and characterization. To overcome these challenges, an approach using PDIOs derived from single cell suspension or single cells has been introduced in recent studies45,
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Jordan E. Axelrad has received research grants from BioFire Diagnostics, Genentech, Janssen, and Takeda; consultancy fees, honorarium, or advisory board fees from AbbVie, Abivax, Adiso, Biomerieux, Bristol-Myers Squibb, Celltrion, Ferring, Fresenius, Janssen, Merck, Pfizer, Sanofi, Takeda, and Vedanta. K.C. is an inventor on US patent 10,722,600 and provisional patents 62/935,035 and 63/157,225.
This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (RS-2025-00557588, RS-2024-00411768, RS-2025-18362970, and RS-2025-02214844, Kyung Ku Jang); a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI) funded by the Ministry of Health & Welfare, Republic of Korea (RS-2024-00406488, Kyung Ku Jang); National Institutes of Health (NIH) grant DK093668 (Ken Cadwell); K23DK124570 (Jordan E. Axelrad); Crohn's & Colitis Foundation (Jordan E. Axelrad). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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| Name | Company | Catalog Number | Comments |
|---|---|---|---|
| [Leu15]-Gastrin I human | Sigma-Aldrich | G91450-0.1 mg | |
| 15 mL conical tube | SPL | 50015 | |
| 20X PBS, pH 7.4 | Biosesang | P2007-7.4 | |
| 50 mL conical tube | SPL | 50050 | |
| A 83-01 | Tocris | 2939-10 mg | |
| Advanced DMEM/F-12 | Gibco | 12634010 | |
| Axygen 1000 µL pipet tips, wide-bore, clear, nonsterile | Axygen | T-1005-WB-C | |
| Axygen 200 µL pipet tips, wide-bore, clear, nonsterile | Axygen | T-205-WB-C | |
| B-27 supplement (50X) serum free | Gibco | 17504044 | |
| Bovine serum albumin | Roche | 10735078001 | |
| Corning 96-well clear polystyrene microplates | Corning | 3599 | |
| Corning cell recovery solution | Corning | 354253 | |
| Corning ECM Matrix (Corning Matrigel) | Corning | 356231 | |
| Costar 24-well clear TC-treated multiple well plates | Corning | 3526 | |
| DMEM high glucose w/ stable glutamine w/ sodium pyruvate | Biowest | L0103-500 | |
| Gentamicin | Gibco | 15750060 | |
| Gentle cell dissociation reagent | Stemcell | 100-0485 | |
| Human FGF-basic (FGF-2/bFGF) (154 aa) recombinant protein | Gibco | 100-18B-100UG | |
| Human IGF-I, animal-free recombinant protein | Gibco | AF-100-11-500UG | |
| Human Noggin protein | Acrobiosystem | NON-H5219-1mg | |
| Human R-Spondin 1 / RSPO1 (21-146) protein | Acrobiosystem | RS6-H4220-1mg | |
| IntestiCult Organoid Growth Medium (Human) | Stemcell | 6010 | |
| L-glutamine 100X | Biowest | X0550-100 | |
| Mouse EGF recombinant protein | Gibco | 315-09-100UG | |
| N-acetyl-L-cysteine | Sigma-Aldrich | A9165-5 g | |
| Penicillin-streptomycin solution 100X | Biowest | l0022-100 | |
| Recombinant human Wnt3a surrogate | Acrobiosystem | WNE-W5253-50ug | |
| TrypLE (enzymatic dissociation reagent) express enzyme (1X), no phenol red | Gibco | 12604013 | |
| Y-27632 dihydrochloride | Tocris | 1254-10MG |
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