Convection-enhanced delivery of targeted toxins for malignant glioma

Expert Opinion on Drug Delivery
Walter Hall, Gregory T Sherr

Abstract

Malignant gliomas represent a difficult treatment challenge for the neuro-oncologist and the neurosurgeon. These tumours continue to be refractory to standard therapies, such as surgery, radiotherapy and conventional chemotherapy, and new therapeutic options are clearly needed. Therefore, investigators have recently taken a new direction and started to engineer compounds such as recombinant cytotoxins, antiangiogenesis factors and genetic delivery vectors. However, these promising new agents are all dependent on an effective distribution method in order to bypass the blood-brain barrier. Convection-enhanced delivery (CED) allows for the administration of targeted toxins and other agents directly into the brain at the site of a tumour via catheters placed with the aid of stereotactic or image-guided surgery. The use of this technique is gaining momentum as a newly accepted treatment modality where little else has produced durable results in the fight against gliomas. Direct intratumoural infusion was first performed in nude mouse flank tumour models of human malignant glioma. After significant testing in preclinical animal studies, this method of delivery was followed by the successful demonstration of in vivo efficacy in Phase ...Continue Reading

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Dec 22, 2009·Future Oncology·Dani S BidrosMichael A Vogelbaum
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