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Prepublished online as a Blood First Edition Paper on October 24, 2002; DOI 10.1182/blood-2002-07-2151.
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Blood, 15 March 2003, Vol. 101, No. 6, pp. 2318-2320
IMMUNOBIOLOGY
Brief report
Tolerance induction to a mammalian blood group-like
carbohydrate antigen by syngeneic lymphocytes expressing the
antigen
Haruko Ogawa,
Deng-Ping Yin,
Jikun Shen, and
Uri Galili
From the Departments of Cardiovascular-Thoracic
Surgery, Surgery and Immunology, Rush University, Chicago, IL.
Tolerance induction to transplantation-associated
carbohydrate antigens, such as blood group A or B and the -gal
epitope (Gal 1-3Gal 1-4GlcNAc-R), is of clinical significance. This
study demonstrates tolerance induction to the -gal epitope in the
experimental animal model of 1,3galactosyltransferanse knockout mice
(KO mice) lacking -gal epitopes by administering syngeneic
lymphocytes expressing -gal epitopes. Repeated immunization of
control KO mice with pig kidney membranes (PKM) expressing many -gal
epitopes induces an extensive anti-Gal antibody response against this
epitope. In contrast, KO mice that received as few as
2 × 106 wild-type (WT) lymphocytes were tolerized and
failed to produce anti-Gal following PKM immunizations. Accordingly,
control mice producing anti-Gal rapidly rejected transplanted WT
hearts, whereas tolerized mice did not reject WT hearts. These findings
suggest that autologous blood lymphocytes processed to express a
carbohydrate antigen may induce a similar tolerance to such an
antigen upon administration into humans.

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