Crystallized structure of type iv collagen nc1 domain hexamer

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/78 (2006.01) A61K 38/06 (2006.01) A61K 38/08 (2006.01) A61K 38/10 (2006.01) A61K 38/16 (2006.01) A61K 38/39 (2006.01) A61P 35/00 (2006.01) C07K 5/08 (2006.01) C07K 5/10 (2006.01) C07K 7/06 (2006.01) C07K 7/08 (2006.01) C07K 19/00 (2006.01)

Patent

CA 2451942

The present invention provides a crystallized NC1 domain hexamer of Type IV collagen, and methods for making the crystal, wherein the NC1 domain hexamer is cystallized such that the three dimensional structure of the cystallized NC1 domain hexamer can be determined to a resolution of at least 3 A or better. The present invention also provides a method for designing compounds to inhibit angiogenesis, tumor growth, tumor metastasis, endothelial cell adhesion and/or proliferation, and/or basal lamina assembly, comprising analyzing the three dimensional structure of a cystallized Type IV collagen NC1 domain hexamer produced by the methods of the invention, and identifying and synthesizing compounts that target regions of the NC1 domain that have been identified by the analysis as being important for type IV collegen heterotrimer and hexamer assembly. The present invention also provides novel polypeptides designed by the rational drug design methods of the present invention, based on an analysis of the type IV collagen NC1 hexamer structure disclosed herein.

L'invention concerne un hexamère cristallisé du domaine NC1 du collagène de type IV, ainsi que des procédés servant à élaborer ce cristal, de façon à pouvoir déterminer la structure tridimensionnelle de cet hexamère cristallisé à une résolution au moins égale ou supérieure à 3 .ANG.. Elle concerne également un procédé servant à élaborer des composés permettant d'inhiber l'angiogénèse, la croissance tumorale, les métastases, l'adhérence et/ou la prolifération des cellules endothéliales et/ou l'assemblage des lames basales, ce qui consiste à analyser la structure tridimensionnelle d'un hexamère cristallisé du domaine NC1 du collagène de type IV obtenue au moyen de ces procédés, à identifier et à synthétiser des composés ciblant des zones du domaine NC1 ayant été identifiées par l'analyse en tant que zones importantes pour l'assemblage des hexamères et des hétérotrimères du collagène du type IV. Elle concerne également de nouveaux polypeptides obtenus au moyen de méthodes rationnelles basées sur l'analyse de la structure de l'hexamère de NC1 du collagène du type IV.

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