Walcher, Lia and Hilger, Nadja and Wege, Anja K. and Lange, Franziska and Tretbar, U. Sandy and Blaudszun, Andre-Rene and Fricke, Stephan (2020) Humanized mouse model: Hematopoietic stemcell transplantation and tracking using short tandem repeat technology. IMMUNITY INFLAMMATION AND DISEASE, 8 (3). pp. 363-370. ISSN , 2050-4527
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Introduction Models of mice carrying a human immune system, so-called humanized mice, are used increasingly as preclinical models to bridge the gap between model organisms and human beings. Challenges of the humanized mouse model include finding suitable sources for human hematopoietic stem cells (HSC) and reaching sufficient engraftment of these cells in immunocompromised mice. Methods In this study, we compared the use of CD34(+)HSC from cord blood (CB) vs HSC from adult mobilized peripheral blood. Furthermore, we developed a simple and highly specific test for donor identification in humanized mice by applying the detection method of short tandem repeats (STR). Results It was found that, in vitro, CB-derived and adult HSC show comparable purity, viability, and differentiation potential in colony-forming unit assays. However, in vivo, CB-derived HSC engrafted to a significantly higher extent in NOD.Cg-Prkdc(scid)IL2r gamma(tm1Wjl)/SzJ (NSG) mice than adult HSC. Increasing the cell dose of adult HSC or using fresh cells without cryopreservation did not improve the engraftment rate. Interestingly, when using adult HSC, the percentage of human cells in the bone marrow was significantly higher than that in the peripheral blood. Using the STR-based test, we were able to identify and distinguish human cells from different donors in humanized mice and in a humanized allogeneic transplantation model. Conclusion From these findings, we conclude that adult mobilized HSC are less suitable for generating a humanized immune system in mice than CB-derived cells.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | UMBILICAL-CORD BLOOD; MOBILIZED PERIPHERAL-BLOOD; BONE-MARROW; MICE; CELLS; adult mobilized stem cells; cord blood-derived stem cells; hematopoietic stem cells; humanized mouse model; short tandem repeat |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Frauenheilkunde und Geburtshilfe (Schwerpunkt Frauenheilkunde) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Mar 2021 08:26 |
| Last Modified: | 22 Mar 2021 08:26 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44401 |
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