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Groupe Fournier

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TRESPERIMUS

286F595V8H

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Status:

Investigational

Class (Stereo):

CHEMICAL (ACHIRAL)

Tresperimus is a new stable immunosuppressive analog of 15-deoxyspergualin (DSG) obtained by organic chemical synthesis. It was initially developed as an antitumor agent. Tresperimus has been designed to be chemically stable in aqueous solution. Tres...

perimus controlled alloreactivity in a fully major histocompatibility complex (MHC) mismatched rat cardiac transplant model and also induced donor-specific long-lasting unresponsiveness. Posttransplant tresperimus therapy effectively protected mice from lethal graft-versus-host disease (GVHD) in a dose-related manner. It has been shown to suppress graft rejection as efficiently as cyclosporine A. Indeed, a short course of tresperimus has similar or better effects compared to the effects of cyclosporine in bone marrow, cardiac, and skin transplant models. Prevention of rejection is related to the induction of donor-specific tolerance without affecting immunity to third-party antigens. In addition, CD4+ T-cells from tresperimus-treated animals can transfer donorspecific tolerance to naive animals, an effect not seen with cyclosporine or other traditional immunosuppressive drugs. The mechanism by which tolerance is induced is not clear. Tresperimus binds to Hsc70, a heat shock protein– chaperoned peptide that, among other effects, inhibits nuclear localization of nuclear factor (NF)-kB, which is required for CD40 and CD28 ligation signaling in antigen-presenting cells, an important early step in T-cell costimulation. Locally administered tresperimus appears to be a potential immunosuppressive agent in the management of intraocular inflammation. Tresperimus had been in phase III clinical trial for the treatment of graft-versus-host disease. However, this development was discontinued.

TRESPERIMUS TRIHYDROCHLORIDE

Q98H19P60T

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Status:

Investigational

Class (Stereo):

CHEMICAL (ACHIRAL)

Tresperimus is a new stable immunosuppressive analog of 15-deoxyspergualin (DSG) obtained by organic chemical synthesis. It was initially developed as an antitumor agent. Tresperimus has been designed to be chemically stable in aqueous solution. Tres...

perimus controlled alloreactivity in a fully major histocompatibility complex (MHC) mismatched rat cardiac transplant model and also induced donor-specific long-lasting unresponsiveness. Posttransplant tresperimus therapy effectively protected mice from lethal graft-versus-host disease (GVHD) in a dose-related manner. It has been shown to suppress graft rejection as efficiently as cyclosporine A. Indeed, a short course of tresperimus has similar or better effects compared to the effects of cyclosporine in bone marrow, cardiac, and skin transplant models. Prevention of rejection is related to the induction of donor-specific tolerance without affecting immunity to third-party antigens. In addition, CD4+ T-cells from tresperimus-treated animals can transfer donorspecific tolerance to naive animals, an effect not seen with cyclosporine or other traditional immunosuppressive drugs. The mechanism by which tolerance is induced is not clear. Tresperimus binds to Hsc70, a heat shock protein– chaperoned peptide that, among other effects, inhibits nuclear localization of nuclear factor (NF)-kB, which is required for CD40 and CD28 ligation signaling in antigen-presenting cells, an important early step in T-cell costimulation. Locally administered tresperimus appears to be a potential immunosuppressive agent in the management of intraocular inflammation. Tresperimus had been in phase III clinical trial for the treatment of graft-versus-host disease. However, this development was discontinued.

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