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:
Jun. 03, 1997
Filed:
Sep. 26, 1995
Applicant:
Inventors:
Alton C Morgan, Jr, Edmonds, WA (US);
Gowsala P Sivam, Edmonds, WA (US);
Paul G Abrams, Seattle, WA (US);
Assignee:
NeoRx Corporation, Seattle, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07K / ;
U.S. Cl.
CPC ...
4241831 ; 4241781 ; 5303911 ; 5303917 ; 530402 ; 530410 ;
Abstract
There is disclosed charge-modified conjugates comprising a targeting protein bound to a therapeutic or diagnostic agent. Charge-modifying a conjugate to cause an acidic shift in the isoelectric point results in prolonged serum half-life upon in vivo administration and is useful to accumulate a therapeutic agent at the target site. Conversely, charge-modification to cause a basic shift in the isoelectric point of the conjugate reduces serum half-life upon in vivo use for diagnostic imaging purposes and results in higher target-to-background ratios.