The primary aim of this project is to determine whether lymphohematopoietic chimerism can be created by in utero transplantation of allogeneic stem cells. We have used fetal baboons in the past and now are using fetal macaques owing to the greater availability of this species through the Primate Center's timed mating program. After confirmation of gestation age, fetal sex is determined by amniocentesis. If the fetus is female, the in utero transplant is done with allogeneic bone marrow from male donors. The donor cells are enriched for CD34+ cells. The rate of chimerism is evaluated by polymerase chain reaction for Y-chromosome-specific antigens. All transplant procedures have been successful and none of the animals lost as a result of the procedures or protocol. Two animals have shown high degrees of chimerism (6.5% and 10%). Our preliminary data suggest that both HLA and cell dose are important determinants of successful in utero stem transplantation.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Primate Research Center Grants (P51)
Project #
5P51RR000166-38
Application #
6116390
Study Section
Project Start
1999-05-01
Project End
2000-04-30
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
38
Fiscal Year
1999
Total Cost
Indirect Cost
Name
University of Washington
Department
Type
DUNS #
135646524
City
Seattle
State
WA
Country
United States
Zip Code
98195
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