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handle: 10261/165107 , 10902/11978
[ES]: Previamente hemos demostrado que BAMBI (Bone Morphogenetic Protein and Activin Membrane Bound Inhibitor) un inhibidor de la señalización de TGFβ, inhibe la diferenciación de los linfocitos T CD4+ hacia células T reguladoras (Tregs) tolerogénicas y potencia la de las células proinflamatorias Th17. En concordancia, ratones deficientes en BAMBI (BAMBI KO) están protegidos frente al desarrollo de artritis inducida por colágeno (CIA). En esta Tesis Doctoral se ha evaluado el efecto de la inhibición farmacológica de BAMBI en el desarrollo de enfermedades autoinmunes. En primer lugar se han obtenido anticuerpos monoclonales (AcMs) específicos de BAMBI murino que inhiben su actividad tanto in vitro, clon B143.14 (IgM), como in vivo, clon B101.37 (IgG1). Posteriormente, demostramos que el tratamiento preventivo de ratones con B101.37 atenúa notablemente el desarrollo de CIA, de artritis psoriásica inducida por manano (APsM) y de psoriasis inducida por imiquimod por mecanismos dependientes de las células Tregs y por TGFβ. Además, el tratamiento con B101.37 tiene un efecto terapéutico sobre la evolución de la APsM crónica. En conclusión, nuestro estudio define a BAMBI como una nueva diana terapéutica en autoinmunidad.
[EN]: We have previously demonstrated that BAMBI (Bone Morphogenetic Protein and Activin Membrane Bound Inhibitor), an inhibitor of TGFβ signaling, negatively regulates the differentiation of CD4+ T cells into tolerogenic regulatory T-cells (Treg) and positively the differentiation into pro-inflammatory Th17 cells. Accordingly, mice deficient in BAMBI (BAMBI KO) are protected against the development of collagen-induced arthritis (CIA). In the present study we explored the effects of pharmacological inhibition of BAMBI in the development of autoimmune diseases. To this end, we obtained inhibitory anti-mouse BAMBI monoclonal antibodies (mAbs) that inhibited its activity both in vitro, clone B143.14 (IgM), and in vivo, clone B101.37 (IgG1). The preventive treatment of mice with B101.37 inhibited the development of CIA, mannan-induced psoriasis arthritis (PsA), and imiquimod-induced psoriasis by Treg and TGFβ-dependent mechanisms. In addition, treatment with B101.37 had a therapeutic effect in the evolution of chronic PsA. Altogether, our results defined BAMBI as a new therapeutic target in autoimmune diseases.
Tesis Doctoral presentada por Dª Pilar Álvarez Sainz de la Maza para obtener el grado de Doctor.
Peer Reviewed
Treg, mAb, TGFβ, BAMBI, Therapeutic target, AcM, Diana terapéutica, Autoimmunity, Th17, Autoinmunidad
Treg, mAb, TGFβ, BAMBI, Therapeutic target, AcM, Diana terapéutica, Autoimmunity, Th17, Autoinmunidad
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