Comparative Study of Human Hematopoietic Cell Engraftment into Balbc and C57BL6 Strain of Rag-2Jak3 Double-Deficient Mice

Abstract EN

Immunodeficient mice are becoming invaluable tools in human stem cell and tumor research.

In this study, we generated Rag-2/Jak3 double-deficient (Rag-2−/−Jak3−/−) mice with a C57/BL6 and Balb/c genetic background and compared the human lymphohematopoietic cell engraftment rate.

Human cord blood-derived CD34+ hematopoietic stem cells were successfully engrafted into Balb/c Rag-2−/−Jak3−/− mice; however, the engraftment rate was far lower in C57/BL6 Rag-2−/−Jak3−/− mice.

Transplantation of human peripheral blood mononuclear cells resulted in the same tendency.

Thus, a Balb/c background offers superior engraftment capacity than a C57/BL6 background and provides an attractive model for human hematopoietic cell engraftment.