The Journal of Immunology, Vol 130, Issue 3 1205-1209, Copyright © 1983 by American Association of Immunologists

ARTICLES

Detection of autoimmune cells proliferating to myelin basic protein and selection of T cell lines that mediate experimental autoimmune encephalomyelitis (EAE) in mice

A Ben-Nun and Z Lando

A procedure is described for the detection of an in vitro proliferative response to the autologous mouse myelin basic protein in mice injected with mouse spinal cord homogenate (MSCH) or with myelin basic proteins (BP) of mouse (MBP) or rat (RBP) origin. The administration of MSCH, but not of MBP or RBP, in a suitable adjuvant could produce a reproducible clinical disease. Nevertheless, a proliferative response to the autologous MBP could not be detected after either inoculation. Only the removal of the adherent cell fraction from the immunized cell population and its replacement with fresh naive accessory cells could reveal a proliferative response to the autologous MBP and to the heterologous RBP. A heteroclitic cross-reactivity between MBP and RBP is demonstrated. The possibility of detecting an in vitro proliferative response to BP allowed the selection and propagation in vitro of cells specific to BP. T cell lines were established that specifically proliferated in response to BP and mediated EAE in normal mice. Intravenous inoculation of as few as 10(6) line cells was capable of producing clinical signs of EAE in normal recipients within 5 to 6 days. Thus, although an inoculation of MSCH was required for active induction of the disease, T cells specifically reactive against BP are sufficient for mediation of EAE in mice.

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