Abstract:
BACKGROUND:We have previously shown successful engraftment of allogeneic hematopoietic stem cells (HSCs) when transplanted across the major histocompatibility antigen barriers if transplanted along with a preparation of facilitator cells (osteoblasts). We have investigated whether or not fully allogeneic HSCs from healthy mouse donors prevent the development of autoimmunities in the autoimmune-prone W/B F1 mice. METHODS:W/B F1 is a strain of mice that spontaneously develop autoimmunities, a coronary vascular disease, thrombocytopenia, and systemic lupus-like syndrome. The 6- to 8-week-old (before the onset of the disease) W/B F1 mice have been transplanted with either a preparation of HSCs alone, or along with facilitator cells from MHC-incompatible autoimmune-resistant BALB/c mice, then followed to determine longterm survival and whether or not they developed signs of the autoimmune disease. RESULTS:The number of the transplanted HSCs acts as the determining factor in achieving successful and durable engraftment. Survival of the W/B F1 mice significantly improved by transplantation of increasing numbers of HSCs, either alone or along with facilitator cells. When W/B F1 mice were transplanted with 2-5 million HSCs, more than 1-year survival was 100%, all the transplanted mice were fully engrafted with allogeneic HSCs, and were free of signs of the autoimmune disease. Histological sections of the hearts, lungs, and kidneys of the transplanted mice showed absence of the autoimmune-associated pathology. CONCLUSIONS:We thus report herein the successful prevention of autoimmune disease by transplantation of a sufficiently large number of purified fully allogeneic HSCs in W/B F1 mice.
journal_name
Transplantationjournal_title
Transplantationauthors
El-Badri NS,Wang BY,Steele A,Cherry,Marikar Y,Mizobe K,Good RAdoi
10.1097/00007890-200009270-00004subject
Has Abstractpub_date
2000-09-27 00:00:00pages
870-7issue
6eissn
0041-1337issn
1534-6080journal_volume
70pub_type
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