Abstract: Provided is a T cell activation inhibitor containing an RGM inhibiting substance such as an anti-RGM neutralizing antibody and the like as an active ingredient. The T cell activation inhibitor is useful as a pharmaceutical composition for the prophylaxis or treatment of autoimmune diseases such as multiple sclerosis and the like, and other diseases caused by T cell activation. In addition, a T cell activation inhibiting substance can be screened for by contacting a test substance with RGM and selecting a test substance that lowers the activity level of RGM.

Abstract: An axon regeneration promoter is disclosed that contains an inhibitor of RGM-like protein as an effective component. Inhibitors of RGM-like protein encompass inhibitors of RGM-like protein such as anti-RGM-like protein antibodies and Y27632, as well as antisense nucleic acids and double-stranded RNAs that can inhibit the transcription or translation of RGM-like protein. The axon regeneration promoter according to the present invention is effective for the regeneration of central nerve axons and thus contributes, for example, to the treatment of patients who have suffered damage to the central nervous system, for example, the spinal cord, due to, for example, a traffic accident or a cerebrovascular disorder.

Abstract: An axon regeneration promoter is disclosed that contains an inhibitor of RGM-like protein as an effective component. Inhibitors of RGM-like protein encompass inhibitors of RGM-like protein such as anti-RGM-like protein antibodies and Y27632, as well as antisense nucleic acids and double-stranded RNAs that can inhibit the transcription or translation of RGM-like protein. The axon regeneration promoter according to the present invention is effective for the regeneration of central nerve axons and thus contributes, for example, to the treatment of patients who have suffered damage to the central nervous system, for example, the spinal cord, due to, for example, a traffic accident or a cerebrovascular disorder.

Abstract: The present invention provides a pharmaceutical composition and method for regenerating nerves and treating neurological diseases based on nerve regeneration. The present invention employs a substance, such as Pep5, PKC, IP3, Rho, Rho GDI, Rho kinase, or the like, which are involved in a p75 signal transduction pathway, or an agent capable of specifically interacting with any of these substances to block or suppress the p75 signal transduction pathway, thereby stopping inhibition of nerve regeneration. As a result, nerve regeneration is resumed. The present invention is also the first to disclose that the PTD domain is useful as an agent for nerve regeneration.

Abstract: The present invention provides a method for regenerating nerves, comprising the step of inhibiting a p75 signal transduction pathway. The inhibition of the p75 signal transduction pathway is selected from the group consisting of inhibition of an interaction between MAG and GT1b, inhibition of an interaction between GT1b and p75, inhibition of an interaction between p75 and Rho, inhibition of an interaction between p75 and Rho GDI, maintenance or enhancement of an interaction between Rho and Rho GDI, inhibition of conversion from Rho GDP to Rho GTP, inhibition of an interaction between Rho and Rho kinase, and inhibition of an activity of Rho kinase.

Abstract: The present invention provides a pharmaceutical composition and method for regenerating nerves and treating neurological diseases based on nerve regeneration. The present invention employs a substance, such as Pep5, PKC, IP3, p75, Rho, Rho GDI, MAG, GT1b, p21, Rho kinase, or the like, which are involved in a p75 signal transduction pathway, or an agent capable of specifically interacting with any of these substances to block or suppress the p75 signal transduction pathway, thereby stopping inhibition of nerve regeneration. As a result, nerve regeneration is resumed. The present invention is also the first to disclose that the PTD domain is useful as an agent for nerve regeneration.