A myelin basic protein-specific T lymphocyte line that mediates experimental autoimmune encephalomyelitis

Area of Science:

• Immunology
• Neuroscience
• Autoimmunity

Background:

• Experimental autoimmune encephalomyelitis (EAE) is a T cell-mediated autoimmune disease of the central nervous system.
• Myelin basic protein (BP) is a key autoantigen in EAE.
• T lymphocyte lines are valuable tools for studying T cell function and autoimmune responses.

Purpose of the Study:

• To establish and characterize a T lymphocyte line specific for guinea pig myelin basic protein (GP-BP).
• To investigate the encephalitogenic and DTH-inducing potential of this T cell line.
• To explore the persistence and transferability of autoimmune T cell activity.

Main Methods:

• Selection of a T lymphocyte line (BP-1) from Lewis rats immunized with GP-BP.
• In vivo induction of EAE and DTH by adoptive transfer of BP-1 cells into Lewis or F1 rats.
• Dose-dependency studies and serial transfer experiments to assess cell activity and persistence.

Main Results:

• The BP-1 line exhibited specific reactivity to GP-BP and induced clinical signs of EAE and DTH in recipient rats.
• The severity of EAE and DTH was dose-dependent on the number of transferred BP-1 cells.
• EAE and DTH were serially transferable, indicating the persistence of BP-1 cells in vivo.

Conclusions:

• An autoreactive, GP-BP-specific T lymphocyte line (BP-1) was successfully generated.
• This T cell line possesses potent encephalitogenic and DTH-inducing capabilities.
• The findings bridge the gap between studying isolated T cell lines and T effector cell functions in vivo.