A Fold-Back Diabody Format for Diphtheria Toxin-Based Immunotoxins That Can Increase Binding and Potency
NIH inventors, in collaboration with Scott and White Memorial Hospital inventors, have developed new immunotoxins comprising a mutant diphtheria toxin linked to an anti-prostate specific membrane antigen (PSMA) fold-back diabody. The fold-back diabody construct has a shortened linker region between the heavy and light chains of the antibody variable domain. This construct allows interactions between the longer-linked variable domains while preventing interactions between the shorter-linked variable domains. This results in increased efficiency of epitope recognition and delivery to the appropriate target cells. These immunotoxins can be used for the treatment of cancers that overexpress PMSA, with specific application against prostate cancer.
Potential Commercial Applications: | Competitive Advantages: |
|
|
Inventors:
David Neville (NIMH) ➽ more inventions...
Intellectual Property:
U.S. Pat: 9,364,557 issued 2016-06-14
US Application No. 60/953,416
US Application No. 12/671,629
Licensing Contact:
Jennifer Wong, M.S.
Email: jennifer.wong2@nih.gov
Phone: 301-480-4821
OTT Reference No: E-268-2007-0
Updated: Nov 9, 2015