3 research outputs found

    La formaci贸n docente en momentos de cambios: 驴Qu茅 nos dicen los profesores principiantes universiatrios?

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    Este estudio cualitativo con una metodolog铆a de estudios de casos m煤ltiple examina la opini贸n de los profesores principiantes de la Universidad de Barcelona sobre las consecuencias del proceso de implementaci贸n del Espacio Europeo de Educaci贸n Superior (EEES). Indaga sobre la valoraci贸n que realiza el profesorado sobre la formaci贸n recibida en el postgrado de 'Iniciaci贸n a la docencia universitaria' y sobre los aprendizajes que les gener贸 la experiencia formativa. La muestra de la investigaci贸n ha estado constituida por diez profesores principiantes de diferentes 谩mbitos de conocimiento de la Universidad de Barcelona y los datos proceden de la realizaci贸n de entrevistas en profundidad. Entre los hallazgos m谩s importantes, cabe destacar su percepci贸n sobre la implementaci贸n del EEES y las propuestas que dan sobre los cambios que deber铆a realizar la Universidad para una verdadera reforma de la formaci贸n de los docente

    Peptide-Based Glioma-Targeted Drug Delivery Vector gHoPe2

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    Gliomas are therapeutically challenging cancers with poor patient prognosis. New drug delivery strategies are needed to achieve a more efficient chemotherapy-based approach against brain tumors. The current paper demonstrates development of a tumor-targeted delivery vector that is based on a cell-penetrating peptide pVEC and a novel glioma-targeting peptide sequence gHo. The unique tumor-homing peptide gHo was identified using <i>in vitro</i> phage display technology. The novel delivery vector, which we designated as gHoPe2, was constructed by a covalent conjugation of pVEC, gHo, and a cargo; the latter could be either a labeling moiety (such as a fluorescent marker) or a cytostatic entity. Using a fluorescent marker, we demonstrate efficient uptake of the vector in glioma cells and selective labeling of glioma xenograft tumors in a mouse model. This is the first time that we know where <i>in vitro</i> phage display has yielded an efficient, <i>in vivo</i> working vector. We also demonstrate antitumor efficacy of the delivery vector gHoPe2 using a well-characterized chemotherapeutic drug doxorubicin. Vectorized doxorubicin proved to be more efficient than the free drug in a mouse glioma xenograft model after systemic administration of the drugs. In conclusion, we have characterized a novel glioma-homing peptide gHo, demonstrated development of a new and potential glioma-targeted drug delivery vector gHoPe2, and demonstrated the general feasibility of the current approach for constructing cell-penetrating peptide-based targeted delivery systems
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