MS5-mDLL1 Stromal Cell Line

In vivo, T-cells develop in the thymus from bone-marrow derived hematopoietic stem and progenitor cells (HSPCs). In vitro, various model systems have been employed to mimic thymic function supportive of T-cell development including the OP9-DL1 system. Recently, a serum-free artificial thymic organoid (ATO) system was developed that supports highly efficient and reproducible in vitro differentiation and positive selection of human T-cells from multiple sources of HSPCs, including cord blood, bone marrow and peripheral blood CD34+ HSPCs (Seet et al. 2017). A key component of the ATO system is the MS5-mDLL1 cell line which obviates the need for primary thymic tissues.

To generate the MS5-mDLL1, a murine stromal cell line (MS5) was transduced with a third-generation lentiviral vector encoding mouse DLL1 and mStrawberry.

To form organoids, MS5-mDLL1 stromal cells are aggregated with HSPCs by centrifugation and cultured on a cell culture insert at the air-fluid interface. Detailed protocols for setting up the artificial thymic organoid (ATO) system are described in reference (Seet et al. 2017).

Reference:
Seet, C.S., He, C., Bethune, M.T., Li, S., Chick, B., Gschweng, E.H., Zhu, Y., Kim, K., Kohn, D.B., Baltimore, D. and Crooks, G.M. (2017) Generation of mature T cells from human hematopoietic stem and progenitor cells in artificial thymic organoids. Nat Methods 14(5): 521-530.

Research Category
Immune Response

Inflammation & Immunology

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The MS5-mDLL1 stromal cell line is used in a serum-free artificial thymic organoid (ATO) system to generate mature T-cells from human hematopoietic stem and progenitor cells.

Stromal Cells

Store in liquid nitrogen. The cells can be cultured for at least 10 passages after initial thawing without significantly affecting the cell marker expression and functionality.

• Each vial contains ≥1X10⁶ viable cells.
• Cells are tested negative for infectious diseases by a Mouse Essential CLEAR panel by Charles River Animal Diagnostic Services.
• Cells are verified to be of mouse origin and negative for inter-species contamination from rat, chinese hamster, Golden Syrian hamster, human and non-human primate (NHP) as assessed by a Contamination Clear panel by Charles River Animal Diagnostic Services.
• Cells are negative for mycoplasma contamination.

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