The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 2010
Filed:
Nov. 21, 2003
Sei Kwang Hahn, Gotenba, JP;
Teruo Nakamura, Gotenba, JP;
Tsuyoshi Shimoboji, Gotenba, JP;
Chugai Seiyaku Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention aims to provide completely biodegradable and biocompatible sustained-release carriers for proteins or peptides, which allow encapsulation of the proteins or peptides at high encapsulation rates without inhibiting their biological activity. The present invention provides a method for preparing a sustained-release carrier, wherein in a solution in the presence of a protein or a peptide, a hyaluronic acid derivative having an unsaturated bond(s) or a mercapto group(s) introduced into hyaluronic acid is chemically crosslinked with a mercapto group-containing compound or an unsaturated bond-containing compound, respectively, to give a hydrogel. The method of the present invention enables efficient encapsulation of proteins or peptides while retaining their biological activity.