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Human T cells in the SCID-hu mouse are phenotypically normal and functionally competent
J F Krowka1, S Sarin, R Namikawa
1SyStemix, Inc., Palo, Alto, CA 94303.
Journal of Immunology (Baltimore, Md. : 1950)
|June 1, 1991
Summary
Severe Combined Immunodeficient human (SCID-hu) mice support long-term T cell development. These mice provide a valuable model for studying human immune responses in vivo.
Area of Science:
- Immunology
- Transplantation Biology
- Animal Models
Background:
- Severe Combined Immunodeficient (SCID) mice are immunodeficient, making them suitable for xenotransplantation.
- SCID-hu mice are created by transplanting human fetal tissues into SCID mice.
Purpose of the Study:
- To evaluate human lymphocyte development and function in SCID-hu mice.
- To assess the potential of SCID-hu mice as a model for human immune studies.
Main Methods:
- Construction of SCID-hu mice with human fetal thymus, liver, and/or lymph nodes.
- Analysis of human lymphocytes in peripheral blood using two-color flow cytometry.
- In vitro functional assays to assess T cell responsiveness.
Main Results:
- SCID-hu mice demonstrate long-term T lymphopoiesis, with detectable circulating human T cells in approximately 50% of mice by 4 months.
- Human T cells in SCID-hu mice are predominantly CD3+, TCR-alpha beta+, and exhibit phenotypes similar to adult peripheral blood T cells.
- Human T cells from SCID-hu mice are functionally competent, responding to mitogens and allogeneic cells in vitro.
Conclusions:
- SCID-hu mice support robust human T cell development and function in vivo.
- These mice serve as a valuable preclinical model for investigating human immune differentiation and responses.