Gold surfaces coated with a thermostable, chemically...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/02 (2006.01) A61K 9/28 (2006.01) C07K 17/00 (2006.01) C12N 11/00 (2006.01)

Patent

CA 2610723

The present invention provides a method for producing biomolecular coatings on devices having gold surfaces. The method describes the production of recombinant fusion proteins consisting of one or more polypeptide domains of interest and a high affinity gold binding peptide consisting of 1 to 7 repeats of a gold binding protein (GBP) sequence. By this method, many biologically active polypeptides lacking intrinsic gold-binding properties can be firmly attached to gold surfaces. By exploiting such gold binding properties, devices are disclosed which comprise such coatings that are useful as prosthetic devices, implants, and tissue interfacing materials. Further, such devices comprising these coatings protect surfaces from fouling and impart various properties to the coated devices.

L'invention concerne un procédé pour produire des revêtements biomoléculaires sur des dispositifs comportant des surfaces contenant de l'or. Le procédé de l'invention comprend la production de protéines de fusion recombinées constituées d'un ou plusieurs domaines de polypeptides d'intérêts et d'un peptide de fixation de l'or, à haute affinité, constitué d'1 à 7 répétitions d'une séquence de protéine de fixation de l'or. Selon le procédé de l'invention, plusieurs polypeptides bioactifs ne présentant pas de propriétés de fixation de l'or intrinsèques peuvent être fixés énergiquement à des surfaces contenant de l'or. Grâce à l'exploitation desdites propriétés de fixation de l'or, des dispositifs comprenant lesdits revêtements sont utilisés en tant que dispositifs prothétiques, implants, et matériaux de liaison par interface avec des tissus. De plus, lesdits dispositifs comprenant les revêtements protègent les surfaces contre l'encrassement et confèrent de nombreuses propriétés aux dispositifs recouverts.

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