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Title:
DEACETYLATION HYDROLASE OF HYALURONIC ACID, HYALURONIC ACID DEACETYLATED BY SAME AND DERIVATIVE THEREOF
Document Type and Number:
WIPO Patent Application WO/2011/155800
Kind Code:
A2
Abstract:
The present invention relates to a deacetylation hydrolase of a hyaluronic acid, a hyaluronic acid deacetylated by same and a derivative thereof. The deacetylated hyaluronic acid and the derivative thereof of the present invention have the following characteristics: a delayed initial decomposition rate on a living body; minimized decrease of molecular weight and viscosity; accelerated gelatinization due to a lower gelatinization temperature than the gelatinization temperature for a non-deacetylated hyaluronic acid; and an hMSC survival rate that is hardly affected by increased concentration of the deacetylated hyaluronic acid and the derivative thereof in a culture medium. As a result, the deacetylated hyaluronic acid and the derivative thereof of the present invention can be useful as a bioingredient such as a delivery system for a cell, gene, drug, and the like, or a support for tissue engineering, etc.

Inventors:
KIM CHUN-HO (KR)
KIM JONG-IL (KR)
Application Number:
PCT/KR2011/004290
Publication Date:
December 15, 2011
Filing Date:
June 10, 2011
Export Citation:
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Assignee:
KOREA INST RADIOLOGICAL & MEDICAL SCIENCES (KR)
KIM CHUN-HO (KR)
KIM JONG-IL (KR)
International Classes:
C12N9/24; A61K47/36; C08B37/08; C12P19/04
Domestic Patent References:
WO1994013815A11994-06-23
Other References:
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S. OERTHER; A-C MAURIN; E. PAYAN; P. HUBERT; F. LAPICQUE; N. PRESLE; J. DEXHEIMER; P. NETTER; F. LAPICQUE: "High Interaction alginate-hyaluronate associations by hyaluronate deacetylation for the preparation of efficient biomaterials", BIOPOLYMER, vol. 54, 2000, pages 273 - 281
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ITO T; FRASER IP; YEO Y; HIGHLEY CB; BELLAS E; KOHANE DS.: "Anti-inflammatory function of an in situ cross-linkable conjugate hydrogel of hyaluronic acid and dexamethasone", BIOMATERIALS, vol. 28, no. 10, April 2007 (2007-04-01), pages 1778 - 86
See also references of EP 2581444A4
Attorney, Agent or Firm:
ERUUM PATENT & LAW FRIM (KR)
특허법인 이룸 (KR)
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