H-2 restriction specificity of T cells from H-2 incompatible radiation bone marrow chimeras: further evidence for the absence of crucial influence of the host/thymus environment on the generation of H-2 restricted TNP-specific T lymphocyte precursors

Journal Article · Wed Feb 01 00:00:00 EST 1984 · Cell. Immunol.; (United States)

DOI:https://doi.org/10.1016/0008-8749(84)90315-0· OSTI ID:6407674

Aizawa, S; Sado, T; Kubo, E

Experiments were conducted to answer the questions related to (a) the role played by the antigen-presenting cells (APCs) present within the thymus and (b) the effect of radiation dose to the recipients on the H-2 restriction profile of TNP-specific cytotoxic T lymphocyte precursors (CTLP) recovered from spleens and/or thymuses of H-2 incompatible radiation bone marrow chimeras (BMC). The H-2 restriction profile of intrathymically differentiating TNP-specific CTLPs was also analyzed in order to test an argument that donor-H-2 restricted CTLP detected in spleens of H-2 incompatible BMC were due to the extrathymically differentiated T cells under the influence of donor-derived lymphoreticular cells. The results indicated the following: (i) splenic T cells from B10(H-2b) leads to (B10(H-2b) leads to B10.BR(H-2k)) chimeras, which were constructed by irradiating primary B10 leads to B10.BR chimeras with 1100 R and reconstituting them with donor-type (B10) bone marrow cells as long as 8 months after their construction, manifested restriction specificities for both donor- and host-type H-2, (ii) splenic T cells from two types of (B10 X B10.BR)F1 leads to B10 chimeras which were reconstituted after exposure of the recipients with either 900 or 1100 R with donor-type bone marrow cells generated both donor- and host-H-2 restricted TNP-specific cytotoxic T cells, and (iii) the TNP-specific CTLPs present in the regenerating thymuses of B10.BR leads to B10 and (B10 X B10.BR)F1 leads to B10 chimeras 4 weeks after their construction were also shown to manifest both donor- and host-H-2 restriction specificities. The significance of these findings on the H-2 restriction profile of CTLP generated in BMCs is discussed.

• Research Organization: National Inst. of Radiological Sciences, Chiba, Japan
• OSTI ID: 6407674
• Journal Information: Cell. Immunol.; (United States), Vol. 83:2
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BONE MARROW
TRANSPLANTS
LYMPHOCYTES
IMMUNOSUPPRESSION
ANTIGENS
BIOLOGICAL RADIATION EFFECTS
DOSE-RESPONSE RELATIONSHIPS
GRAFT-HOST REACTION
RADIATION CHIMERAS
SPECIFICITY
THYMUS
ANIMAL CELLS
ANIMAL TISSUES
BIOLOGICAL EFFECTS
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BODY
BODY FLUIDS
CHIMERAS
CONNECTIVE TISSUE CELLS
HEMATOPOIETIC SYSTEM
LEUKOCYTES
LYMPHATIC SYSTEM
MATERIALS
MOSAICISM
ORGANS
RADIATION EFFECTS
SOMATIC CELLS
TISSUES
560152* - Radiation Effects on Animals- Animals