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Montel-Hagen A, Tsai S, Seet CS, Crooks GM. Generation of Artificial Thymic Organoids from Human and Murine Hematopoietic Stem and Progenitor Cells. Curr Protoc 2022; 2:e403. [PMID: 35384408 DOI: 10.1002/cpz1.403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The generation of T cells is a complex, carefully orchestrated process that occurs in the thymus. The ability to mimic T cell differentiation in vitro has opened up avenues to better understand different stages of thymopoiesis but has also enabled the in vitro production of mature T cells suitable for immunotherapy. Among existing protocols, the artificial thymic organoid (ATO) system has been shown to be the most efficient at producing mature conventional T cells. In this serum-free model, human or murine hematopoietic stem and progenitor cells (HSPCs) are combined with a murine stromal cell line expressing a Notch ligand in a 3D cell aggregate. In ATOs, although only simple medium changes are required throughout the cultures, HSPCs differentiate into T cells with kinetics and phenotypes similar to those of endogenous thymopoiesis. This article describes protocols for the generation of ATOs from human and murine HSPCs. © 2022 Wiley Periodicals LLC. Basic Protocol 1: Expansion and preparation of MS5-hDLL4 or MS5-mDLL4 cells Basic Protocol 2: Isolation of human hematopoietic stem and progenitor cells (HSPCs; CD34+ cells) Support Protocol 1: Transduction of human HSPCs (CD34+ cells) Basic Protocol 3: Production of thymic progenitors and mature T cells from human HSPCs in artificial thymic organoids (ATOs) Support Protocol 2: Phenotype analysis of human ATO cells by flow cytometry Basic Protocol 4: Isolation of murine HSPCs (Lin- Sca1+ cKit+; LSK) and hematopoietic stem cells (LSK CD150+ CD48-) Basic Protocol 5: Production of thymic progenitors and mature T cells from murine HSPCs in ATOs Support Protocol 3: Phenotype analysis of murine ATO cells by flow cytometry Alternate Protocol: Generation of ATOs from single HSPCs.
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Affiliation(s)
- Amélie Montel-Hagen
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, California
| | - Steven Tsai
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Christopher S Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, California.,Broad Stem Cell Research Center, UCLA, Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Gay M Crooks
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, California.,Broad Stem Cell Research Center, UCLA, Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California.,Division of Pediatric Hematology-Oncology, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, California
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