Protection from ionizing irradiation or chemotherapeutic...

A - Human Necessities – 61 – K

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A61K 48/00 (2006.01)

Patent

CA 2331569

A method of protecting a subject against an agent that elicits production of toxic free radicals, superoxide anions, or heavy metal cations in the subject is disclosed which entails in vivo administration to the subject of a polynucleotide encoding a protein that is transiently expressed in said subject. The transiently expressed protein is capable of neutralizing or eliminating the toxic free radicals, superoxide anions or heavy metal cations that are elicited by the agent. The method is particularly useful in preventing the development of esophagitis during treatment of lung cancer patients with ionizing radiation and/or chemotherapeutic drugs.

Cette méthode, visant à protéger un sujet contre un agent déclenchant la production de radicaux libres toxiques, d'anions de superoxyde ou de cations de métaux lourds, repose sur l'administration in vivo audit sujet d'un polynucléotide codant une protéine exprimée de manière transitoire chez ce sujet. Cette protéine exprimée de manière transitoire est à même de neutraliser les radicaux libres toxiques, les anions de superoxyde ou les cations de métaux lourds dont l'apparition est le fait de l'agent susmentionné ou bien de les éliminer. Cette méthode se révèle particulièrement utile pour empêcher le développement d'une oesophagite lors du traitement d'un cancer du poumon par exposition à un rayonnement ionisant et/ou par absorption de médicaments chimiothérapiques.

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