Method for detecting the expression of an envelope protein...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/15 (2006.01) A61K 39/21 (2006.01) A61K 48/00 (2006.01) A61P 15/00 (2006.01) A61P 35/00 (2006.01) C12N 5/10 (2006.01) C12N 15/48 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2383877

The invention concerns a method for detecting the expression of an envelope protein or polypeptide of a human endogenous retrovirus, characterised in that the protein or polypeptide has a polypeptide sequence comprising the sequence SEQ ID NO: 1 or a fragment of SEQ ID NO: 1 or a sequence having, for every sequence of 20 amino acids, at least 90 % identity with the SEQ ID NO: 1 or with a fragment of SEQ ID NO: 1, and the method consists in detecting the fusogenic power of said protein or said fragment in the cells of a cell tissue or cell culture, by demonstrating the formation of syncytia. A gene or a nucleic acid or a fragment thereof is used for preparing a therapeutic or prophylactic composition, in particular for treating cancers and for preventing deficiency in placental development.

Le procédé de détection de l'expression d'une protéine ou d'un polypeptide d'enveloppe d'un rétrovirus endogène humain, est caractérisé en ce que la protéine ou le polypeptide présente une séquence polypeptidique qui comprend la séquence SEQ ID NO: 1 ou un fragment de SEQ ID NO: 1 ou une séquence présentant, pour toute suite de 20 acides aminés, au moins 90% d'identité avec la séquence SEQ ID NO: 1 ou avec un fragment de SEQ ID NO: 1, et en ce qu'on détecte le pouvoir fusogène de ladite protéine ou dudit fragment dans des cellules d'un tissu cellulaire ou d'une culture cellulaire, par la mise en évidence de la formation de syncytia. On utilise un gène ou un acide nucléique ou un fragment de ceux-ci pour préparer une composition thérapeutique ou prophylactique, notamment pour traiter des cancers et prévenir une déficience dans l'élaboration du placenta.

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