Abstract
Immunization of susceptible rodent or primate species with type II collagen (b-CII) from bovine origin induces type II collagen-induced arthritis (CIA). The disease is characterized as a systemic polyarthritis associated with humoral and cellular autoimmunity to CII and shares similarity with human arthritic diseases. The objective of this study was to develop a procedure for induction of resistance to CIA in animals, which possess a certain major histocompatibility complex phenotype that makes them prone to develop CIA (susceptible). It is shown that by immunization with an attenuated form of CII, in which arthritogenic epitopes have been destroyed by heat denaturation, disease resistance is induced in a susceptible inbred rat strain (RT-1u) and in an outbred population of susceptible rhesus monkeys (lacking the Mamu-A26 allele). In both species the disease resistance is connected with modulation of anti-CII autoantibodies of the IgM isotype. This protocol may provide a basis for effective and safe methods to induce protection to autoimmune arthritis in those subjects that are genetically prone to develop such a disease.
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