Bispecific Antibodies to Target Latent HIV-1 Infection

The invention describes bispecific antibodies designed to kill latently HIV-1 infected T cells. It is thought that such bispecific antibodies will reduce or eliminate the pool of HIV-1 infected cells, contributing to functional cure. The antibody constructs comprise an HIV Env-binding fragment of a broadly neutralizing antibody linked to an anti-CD3 single chain variable fragment (scFv). One embodiment is a VRC01 scFv linked to the anti-CD3 scFv . Other embodiments comprise Fab fragments of VRC07 or 10E8 antibodies linked to the anti-CD3 scFv. The bispecific antibody simultaneously stimulates infected cells to express gp120, instructs cytotoxic T cells to kill these cells, and neutralizes extraneous viral particles.

Potential Commercial Applications: Competitive Advantages:
  • Immunotherapy of HAART-suppressed HIV-1 infection.
  • Immunotherapy targets latently infected cells harboring virus resistant to HAART.
  • Broadly neutralizing antibody fragment neutralizes extraneous viral particles.

Development Stage:
  • Pre-clinical
  • In vivo data available (animal)


Gary Nabel (NIAID)  ➽ more inventions...

Zhi-yong Yang (NIAID)  ➽ more inventions...

Amarendra Pegu (NIAID)  ➽ more inventions...

Xiaoti Guo (NIAID)  ➽ more inventions...

Intellectual Property:
US Pat: - issued -
PCT Application No. PCT/US2013/038214 filed on 2013-04-25

Collaboration Opportunity:

The National Institute of Allergy and Infectious Diseases, Vaccine Research Center, is seeking statements of capability or interest from parties interested in collaborative research to further develop, evaluate or commercialize HIV-1 bispecific antibodies. For collaboration opportunities, please contact Barry Buchbinder, Ph.D. at 301-594-1696.

Licensing Contact:
Carol Salata, Ph.D.
Phone: 240-627-3727

OTT Reference No: E-071-2012-0
Updated: Jan 6, 2014