Peptides for treatment of the human...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/11 (2006.01) A61K 38/08 (2006.01) A61K 38/12 (2006.01) A61K 38/21 (2006.01) A61P 35/00 (2006.01) C07K 7/06 (2006.01) C07K 7/64 (2006.01) C07K 14/025 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2471110

The invention relates to peptides that are used to treat epithelial tumours and, specifically, those associated with oncogenic types of the Papilloma Virus (HPV). The invention also relates to the identification of peptides having a structure that enables the blocking of the phosphorylation domain by casein kinase II (CKII) by means of direct interaction with said site. According to the invention, eleven peptides are used which have a cyclical structure and different amino acid sequences. Said peptides: inhibit the phosphorylation site by in vitro CKII; produce cytotoxicity in carcinoma cells in the neck of the human uterus which are transformed by HPV-16 (CaSki); and increase the sensitivity of said cells to the cytostatic effect of interferon (IFN). The invention also relates to the use of said peptides which are conjugated or fused to other peptides and chemical compounds with intracellular penetration. Moreover, the invention relates to the use of mimic molecules of peptide and chemical origin.

L'invention se rapporte à des peptides utilisés pour le traitement de tumeurs d'origine épithéliale, et spécifiquement de ceux associés à des types oncogènes du virus du papillome (VPH). L'invention se rapporte également à l'identification de peptides dont la structure permet le blocage du domaine de phosphorilation par la caséine kinase II (CKII) par le biais de l'interaction directe avec ledit site. Dans la présente invention, on travaille sur onze peptides à structure cyclique et séquence d'acides aminés différentes, lesquels inhibent le site de phosphorilation par CKII in vitro, produisent une cytotoxicité dans les cellules de carcinome du col utérin humain transformées par VPH-16 (CaSki) et augmentent par ailleurs la sensibilité desdites cellules à l'action cytostatique de l'interféron (IFN). L'invention se rapporte de plus à l'usage de ces peptides conjugués ou fusionnés avec d'autres peptides et composés chimiques à pénétration intracellulaire et à l'utilisation de molécules mimétiques d'origine peptidique et chimique.

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