Technology ID
TAB-4940

Targeted Modifications in Mosaic Envelopes Elicit Potent Neutralizing Antibodies

E-Numbers
E-134-2011-0
Lead Inventor
Nabel, Gary
Lead IC
NIAID
Co-Inventors
Wu, Lan
Yang, Zhi-yong
ICs
NIAID
Applications
Vaccines­­­
Therapeutics
Therapeutic Areas
Respiratory
Rare/Neglected Diseases
Infectious Disease
Immunology
Development Stages
Discovery
Research Products
Research Equipment
Plasmids/Vectors
Antibodies

The technology involves modifying HIV-1 envelope mosaic constructs to enhance the efficacy of HIV vaccines. These modifications target specific regions of the envelope protein, aiming to elicit antibodies similar to potent anti-HIV neutralizing antibodies naturally produced during infection. By replacing highly variable patches in the V1, V2, and V3 loops with defined sequences and eliminating immune-dominant epitopes, the modified constructs induce the production of quaternary antibodies. These antibodies target the V1, V2 loops and exhibit neutralization potential akin to naturally occurring potent antibodies like PG9/PG16. The technology has been demonstrated in animal studies to successfully elicit these potent antibodies, marking a significant advancement in HIV vaccine development.

Commercial Applications
The technology of modifying HIV envelope mosaic constructs has several potential applications beyond HIV vaccine development. These modified constructs could be utilized in research settings to better understand the immune response to HIV infection and aid in the development of novel therapeutics. Furthermore, the approach of targeting specific regions of viral proteins to induce potent neutralizing antibodies could be applied to other infectious diseases, potentially leading to the development of vaccines against other pathogens. Additionally, the technology's ability to elicit quaternary antibodies could have implications for the design of vaccines against other viruses that require a similar antibody response for neutralization. Overall, this technology has the potential to significantly impact the fields of vaccinology and infectious disease research.

Competitive Advantages
The modified HIV envelope mosaic constructs offer several competitive advantages in the field of HIV vaccine development. By specifically targeting the V1, V2, and V3 loops of the envelope protein, these constructs can elicit quaternary antibodies that closely resemble naturally occurring potent anti-HIV neutralizing antibodies, such as PG9/PG16. This targeted approach enhances the likelihood of inducing a broad and potent immune response against diverse HIV strains. Additionally, the modifications eliminate immune-dominant epitopes, potentially reducing the likelihood of immune evasion by the virus. The ability to induce PG-like neutralizing antibodies through vaccination represents a significant advancement in HIV vaccine development, offering a promising avenue for achieving effective protection against HIV infection.
Licensing Contact:
Hafiz, Sabrina
sabrina.hafiz@nih.gov