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.

Date of Patent:
Jun. 02, 2020

Filed:

May. 20, 2016
Applicant:

The University of Tokyo, Tokyo, JP;

Inventors:

Kazunori Kataoka, Tokyo, JP;

Yasutaka Anraku, Tokyo, JP;

Kanjiro Miyata, Tokyo, JP;

Meng Zheng, Tokyo, JP;

Shigehito Osawa, Tokyo, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61K 47/69 (2017.01); A61K 31/713 (2006.01); A61K 47/34 (2017.01); A61K 31/7105 (2006.01); A61K 47/50 (2017.01); A61K 47/42 (2017.01); A61K 47/32 (2006.01); A61K 9/00 (2006.01); A61K 47/64 (2017.01); A61K 47/54 (2017.01); A61K 47/60 (2017.01); A61K 47/59 (2017.01); A61K 9/107 (2006.01); C12N 15/113 (2010.01);
U.S. Cl.
CPC ...
A61K 47/6907 (2017.08); A61K 9/0019 (2013.01); A61K 9/1075 (2013.01); A61K 31/713 (2013.01); A61K 31/7105 (2013.01); A61K 47/32 (2013.01); A61K 47/34 (2013.01); A61K 47/42 (2013.01); A61K 47/50 (2017.08); A61K 47/549 (2017.08); A61K 47/59 (2017.08); A61K 47/60 (2017.08); A61K 47/6455 (2017.08); C12N 15/113 (2013.01); C12N 2310/14 (2013.01); C12N 2310/351 (2013.01); C12N 2310/3513 (2013.01);
Abstract

Provided are a micelle composition for nucleic acid delivery using a temperature-sensitive polymer, and a method for producing the micelle. For example, provided is a polyion complex comprising a temperature-sensitive copolymer and a nucleic acid, wherein the temperature-sensitive copolymer comprises a cationic block and a temperature-sensitive block, the cationic block optionally carrying a hydrophilic block linked thereto, and the polyion complex is obtained by mixing the temperature-sensitive copolymer with the nucleic acid under temperature conditions equal to or lower than the lower critical solution temperature (LCST) of the temperature-sensitive copolymer.


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