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  • Title: Naturally occurring antibodies to poly(ADP-ribose) in autoimmune MRL/Mp-lpr/lpr mice.
    Author: Kanai Y, Fujiwara M.
    Journal: Clin Exp Immunol; 1985 Jan; 59(1):132-8. PubMed ID: 3871674.
    Abstract:
    The presence of antibodies to poly(ADP-ribose) was demonstrated in the sera of MRL/Mp-lpr/lpr (MRL/l) mice by an enzyme linked immunosorbent assay (ELISA). Antibody to poly(ADP-ribose) was strongly inhibited by single stranded DNA (ssDNA) and poly(ADP-ribose), and less by double stranded DNA (dsDNA). Affinity purified anti-poly(ADP-ribose) antibodies bound more with immobilized ssDNA than with poly(ADP-ribose), and were significantly inhibited by soluble ssDNA, although poly(ADP-ribose) was the best soluble inhibitor. On the contrary, affinity purified anti-ssDNA antibodies bound best with ssDNA and significantly but less with poly(ADP-ribose); however, they were scarcely inhibited by poly(ADP-ribose). These results suggest that similar antigenic determinants exist in poly(ADP-ribose) and ssDNA. It is conceivable, however, at the present moment that 'naturally occurring antibodies to poly(ADP-ribose)' in MRL/l mice are subpopulations of anti-ssDNA antibodies that react equally well with poly(ADP-ribose) and ssDNA.
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