Christina Kong

Publication Details

  • USE OF ANTI-L3T4 AND ANTI-IA TREATMENTS FOR PROLONGATION OF XENOGENEIC ISLET TRANSPLANTS TRANSPLANTATION Kaufman, D. S., Kong, C. S., Shizuru, J. A., Gregory, A. K., Fathman, C. G. 1988; 46 (2): 210-215

    Abstract:

    The effects of T helper lymphocyte and Ia+ cell depletion were examined for their ability to independently and synergistically achieve prolongation of xenogeneic (rat-to-mouse) islet transplants. Recipient mice were depleted of T helper lymphocytes by short-term treatment with the anti-L3T4 monoclonal antibody GK1.5. Donor rat islets were treated prior to transplantation with a concentration of anti-Ia immunotoxin (13.4 x RT) that selectively depleted Ia+ cells within the islets while leaving functional insulin-secreting beta-cells unaffected. Anti-L3T4 treatment alone allowed transplants to be prolonged compared with untreated controls; however, all such treated mice rejected their xenogeneic transplant within 22 days. Although 13.4 x RT treatment of donor islets alone did not prolong engraftment, when donor rat islets were pretreated with the anti-Ia immunotoxin and grafted into L3T4-depleted mice, normoglycemia was maintained for greater than 50 days in 56% of transplants. These results suggest that neither L3T4 depletion nor anti-Ia immunotoxin treatment alone is enough to achieve indefinite survival of xenogeneic islets. However, decreasing the immunogenicity of the transplanted islets by anti-Ia immunotoxin treatment prior to transplantation into anti-L3T4 treated mice can allow greatly prolonged xenogeneic graft survival.

    View details for Web of Science ID A1988P695400005

    View details for PubMedID 2970132

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