Studies of allogeneic bone marrow and spleen cell transplantation in a murine model using ultraviolet-B light
- South Western Regional Transfusion Centre, Bristol (United Kingdom)
Ultraviolet irradiation inhibits alloreactive and mitogen-induced responses and might reduce both graft-versus-host and host-versus-graft reactions after bone marrow transplantation (BMT). We have studied proliferative responses to mitogens and reactivity in mixed lymphocyte culture after irradiation with ultraviolet (UV)-B light using splenocytes from Balb/c (H-2d) and CBA (H-2k) mice. Response to mitogens and in MLC was strongly inhibited by 20 J/m{sup 2} and abolished at 50 J/m{sup 2}. Clonogenic cell recovery (CFU-GM; CFU-S) after UV-B irradiation was also reduced. When bone marrow and spleen cells were transplanted from parent (Balb/c) animals into F1 hybrid (Balb/c X CBA) recipients, all animals died with features indicative of graft-versus-host disease (GVHD) in 34 days. If the grafts were first irradiated with 100 J/m{sup 2} of UV-B at a mean wavelength of 310 nm, then 76% survived to day 80 when they were killed and shown to have normal marrow cellularity. The remainder died in marrow aplasia or of GVHD. H-2 typing in a group of surviving recipients showed either donor hematopoiesis only (8 of 15), mixed allogeneic chimerism (5 of 15), or recipient type hematopoiesis (2 of 15). Higher doses (200 to 300 J/m{sup 2}) were detrimental to survival with 88% of recipients dying in marrow aplasia. Syngeneic BMT in Balb/c mice showed slower hematopoietic reconstitution when the grafts were first irradiated with 100 J/m{sup 2}. After BMT from Balb/c to CBA mice all recipients of unirradiated grafts died within 54 days. By contrast, after graft irradiation with 100 J/m{sup 2} survival of recipient animals to day 80 was 59%. If these grafts were treated with 50 J/m{sup 2} survival was only 26% with an increase in deaths due to GVHD. Hematopoiesis at day 80 in a group of survivors studied by Ig heavy chain allotyping indicated donor type hematopoiesis in 6 of 10 (50 J/m{sup 2}) and 2 of 9 (100 J/m{sup 2}).
- OSTI ID:
- 5546512
- Journal Information:
- Blood (Journal of Hematology); (USA), Vol. 77:9; ISSN 0006-4971
- Country of Publication:
- United States
- Language:
- English
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BONE MARROW CELLS
TRANSPLANTS
LYMPHOCYTES
CELL PROLIFERATION
CELL DIVISION
CONCANAVALIN A
GRAFT-HOST REACTION
HYBRIDIZATION
INHIBITION
MICE
SPLEEN CELLS
ULTRAVIOLET RADIATION
AGGLUTININS
ANIMAL CELLS
ANIMALS
ANTIBODIES
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BODY FLUIDS
CONNECTIVE TISSUE CELLS
ELECTROMAGNETIC RADIATION
HEMAGGLUTININS
LECTINS
LEUKOCYTES
MAMMALS
MATERIALS
RADIATIONS
RODENTS
SOMATIC CELLS
VERTEBRATES
560120* - Radiation Effects on Biochemicals
Cells
& Tissue Culture