Polyclonal antiserum against a universal tumor antigen

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/30 (2006.01) A61K 39/395 (2006.01)

Patent

CA 2609554

The present invention relates to a polyclonal antiserum against a universal tumor antigen obtainable by (i) eliciting an in vivo humoral response against embryonic tissue in a non-human vertebrate, whereby said embryonic tissue is of the same genetic line as the non-human vertebrate; (ii) recovering from the immunized non-human animal spleen and isolating from said spleen individual spleen cells/lymphocytes; (iii) eliciting a second in vivo humoral response to the isolated spleen cells/lymphocytes suspension obtained in step (ii) in a further non-human animal of the same genetic line as the non-human animal of step (i); and (iv) isolating the desired polyclonal antiserum from said animal. Furthermore, the invention provides for the use of the polyclonal antiserum for the preparation of a pharmaceutical composition for the amelioration, prevention and/or treatment of cancer, in particular cancer of the breast, lung, prostate, uterus, colon, stomach or bladder. Additionally the invention relates to the use of the polyclonal serum of the invention for the preparation of a pharmaceutical composition, wherein said pharmaceutical composition is to be administered to a subject in need of treatment in combination with a further anti-proliferative drug or medicament.

La présente invention concerne un antisérum polyclonal contre un antigène tumoral universel pouvant être obtenu selon une méthode consistant : (i) à déclencher une réponse humorale in vivo contre un tissu embryonnaire chez un vertébré non humain, ledit tissu embryonnaire appartenant à la même lignée génétique que celle du vertébré non humain ; (ii) à récupérer et à isoler, à partir de la rate du vertébré non humain immunisé, des cellules/lymphocytes T individuels de la rate ; (iii) à déclencher une seconde réponse humorale in vivo à la suspension de cellules/lymphocytes T isolés de la rate obtenue au cours de l'étape (ii) chez un autre animal non humain de la même lignée génétique que celle de l'animal non humain de l'étape (i) ; et (iv) à isoler l'antisérum polyclonal désiré à partir dudit animal. L'invention concerne également l'utilisation de l'antisérum polyclonal dans la préparation d'une composition pharmaceutique destinée aux soins en matière de cancer, à la prévention et/ou au traitement du cancer, en particulier du cancer du sein, du poumon, de la prostate, de l'utérus, du côlon, de l'estomac ou de la vessie. L'invention concerne également l'utilisation de l'antisérum polyclonal pour la préparation d'une composition pharmaceutique destinée à être administrée à un patient nécessitant un traitement combiné avec une autre substance ou un autre médicament antiprolifératif.

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