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:
Jul. 22, 2008

Filed:

Jan. 19, 2006
Applicants:

Sei-ichi Tanuma, Tokyo, JP;

Daisuke Shiokawa, Tokyo, JP;

Inventors:

Sei-ichi Tanuma, Tokyo, JP;

Daisuke Shiokawa, Tokyo, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 38/46 (2006.01); C07K 14/00 (2006.01); C12N 9/16 (2006.01); C12Q 1/44 (2006.01); C07H 21/00 (2006.01); C12N 15/00 (2006.01); C12N 1/21 (2006.01); C12N 5/10 (2006.01); C12P 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

This invention provides a novel acid DNase (DLAD) which is an endonuclease capable of cleaving DNA independently from divalent cations, under acidic conditions, which retains its activity in acidic to even neutral pH range, and which is not inhibited by G-actin. This invention also provides a DNA encoding the enzyme, an expression vector containing the DNA, and a host cell transformed with the expression vector. Furthermore, a pharmaceutical composition containing DLAD, DLAD expression vector or a host cell transformed with the expression vector as an active ingredient is provided. The pharmaceutical composition is useful as a therapeutic agent replacing DNase I for cystic fibrosis, and can provide a new approach for the prophylaxis and treatment of infectious diseases.


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