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:
Aug. 16, 2016
Filed:
Sep. 16, 2013
The United States of America, As Represented BY the Secretary, Department of Health and Human Services, Washington, DC (US);
Mitchell Ho, Urbana, MD (US);
Ira H. Pastan, Potomac, MD (US);
Dimiter S. Dimitrov, Frederick, MD (US);
Zhewei Tang, Rockville, MD (US);
Mingqian Feng, Rockville, MD (US);
Wei Gao, Rockville, MD (US);
Abstract
Described herein is the use of phage display antibody engineering technology and synthetic peptide screening to identify SD1 and SD2, human single-domain antibodies to mesothelin. SD1 recognizes a conformational epitope at the C-terminal end (residues 539-588) of human mesothelin close to the cell surface. SD2 binds full-length mesothelin. To investigate SD1 as a potential therapeutic agent, a recombinant human Fc (SD1-hFc) fusion protein was generated. The SD1-hFc protein exhibits strong complement-dependent cytotoxicity (CDC), in addition to antibody-dependent cellular cytotoxicity (ADCC), against mesothelin-expressing tumor cells. Furthermore, the SD1-hFc protein causes significant tumor growth inhibition of tumor xenografts in nude mice. SD1 and SD2 are the first human single-domain antibodies targeting mesothelin-expressing tumors.