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Neutralizing antibodies that bind to the zika virus domain iii envelope region

a zika virus and envelope region technology, applied in the field of neutralizing antibodies that bind to the zika virus domain iii envelope region, can solve the problems of cross-reacting antibodies that fail to neutralize, and the spectrum of devastating neurodevelopmental aberrations

Pending Publication Date: 2022-09-29
THE ROCKEFELLER UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes the discovery of protective antibodies to Zika virus and dengue virus, which can be used for prevention and treatment of these infections. The antibodies target specific regions of the viral proteins, called the EDIII, which are involved in virus attachment to host cells. The patent describes the use of a combination of two human monoclonal antibodies that recognize different but overlapping epitopes on the EDIII of both Zika and dengue viruses. This combination was found to be effective in preventing infection and thwarting viral escape in macaques. The patent also discusses the modification of the antibodies, which can improve their manufacturability and function. Overall, the patent provides novel compositions and methods for approaching Zika and dengue virus prophylaxis and therapy.

Problems solved by technology

However, when infection occurs during pregnancy, vertical transmission can lead to a spectrum of devastating neurodevelopmental aberrations, collectively referred to as Congenital Zika Syndrome.
However, there is concern that cross-reacting antibodies that fail to neutralize the virus may enhance rather than curb subsequent flavivirus infections (Harrison, 2016; Wahala and Silva, 2011).

Method used

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  • Neutralizing antibodies that bind to the zika virus domain iii envelope region
  • Neutralizing antibodies that bind to the zika virus domain iii envelope region
  • Neutralizing antibodies that bind to the zika virus domain iii envelope region

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0143]Serologic Responses to ZIKV in Brazil and Mexico

[0144]Individuals infected with pathogens display a spectrum of antibody responses ranging from low levels of non-neutralizing antibodies to high titers of neutralizing antibodies. To determine whether a population infected with ZIKV also displays a range of antibody responses we screened 405 individuals living in ZIKV epidemic areas for serum IgG capable of binding to ZIKV E Domain III (ZEDIII, FIG. 1A).

[0145]Nearly three hundred sera were obtained in November 2015, shortly after ZIKV was introduced in Salvador, Brazil, from participants who were enrolled in a prospective study in 2013 from Pau da Lima, an urban slum community within the city (Cardoso et al., 2015; Felzemburgh et al., 2014; Hagan et al., 2016). An additional 108 sera were from Santa Maria Mixtequilla, a rural town in Oaxaca, Mexico. ZIKV infections were documented by PCR in Santa Maria Mixtequilla at the time of sample collection in April of 2016. Dengue virus (...

example 2

[0166]This Example provides a description of materials and methods used to obtain the results discussed above.

Experimental Model and Subjects Details

[0167]Human Subjects

[0168]Samples of peripheral blood were obtained upon consent from community participants of cohort studies in Pau da Lima (Brazil) and Santa Maria Mixtequilla (Mexico) under protocols approved by the ethical committees of the Rockefeller University (IRB DRO-0898), Yale University (IRB HIC 1603017508), FIOCRUZ (CAAE 63343516.1.0000.5028), Hospital Geral Roberto Santos (1.998.103), and National Institute of Respiratory Diseases (C16-16). Information regarding sex and age of study participants can be obtained upon request. Details on the size of the cohorts and time when samples were obtained is listed in the Results section of the manuscript.

[0169]Mice

[0170]IFNAR1− / − mice were obtained from The Jackson Laboratory and bred and maintained in the AAALAC-certified facility of the Rockefeller University. Mice were specific ...

example 3

[0297]This Example extends the disclosure of Examples 1 and 2 above. Zika virus (ZIKV) infection causes severe neurologic complications and fetal aberrations1. As discussed in Examples 1 and 2, human monoclonal antibody Z004 is a VH3-23 / VK1-5 antibody that recognizes the lateral ridge of the Envelope Domain III (EDIII) of ZIKV, is a potent neutralizer in vitro, and prevents disease in mice. In this Example we demonstrate that when Z004 is administered to macaques for prophylaxis, it leads to emergence of resistant ZIKV variants bearing mutations in the antibody target site. As discussed above, Z021 has a structure in complex with the antigen that reveals a distinct although overlapping epitope on EDIII. Z021 potently neutralizes ZIKV in vitro and prevents disease in mice. This Example shows that in a clinically relevant macaque model, prophylactic co-administration of Z004 with Z021 is protective and suppresses emergence of resistant variants. Thus, a combination of two potent human...

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PUM

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Abstract

Antibodies to Zika virus (ZIKV) and dengue 1 virus (DENV1) are provided. The amino acid sequences of the antibodies may be modified. Methods for prophylaxis and / or therapy by administering the antibodies and combinations thereof are provided. Immunological detection methods using the antibodies are provided. Also provided are vaccine compositions which comprise peptides derived from ZIKV and DENV1.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of U.S. patent application Ser. No. 16 / 603,341, filed Oct. 7, 2019, which is a National Phase of International patent application no. PCT / US2018 / 026676, filed Apr. 9, 2018, which claims priority to U.S. provisional patent application No. 62 / 483,001, filed Apr. 7, 2017, the disclosures of each of which are incorporated herein by reference.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH[0002]This invention was made with government support under grant no. UM1AI100663 awarded by the National Institutes of Health. The government has certain rights in the invention.SEQUENCE LISTING[0003]The instant application contains a Sequence Listing which has been submitted electronically in ASCII format and is hereby incorporated by reference in its entirety. Said ASCII copy, created on Apr. 6, 2018, is named 076091_00046_SL.txt and is 507,614 bytes in size.BACKGROUND[0004]Zika virus (ZIKV) infection typically produces mi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C07K16/10A61K39/12A61K39/42C12N15/86
CPCC07K16/1081A61K39/12A61K39/42C12N15/86A61K2039/505C12N2770/24134A61P31/14C07K2317/21C07K2317/33C07K2317/34C07K2317/76C07K2317/55A61K2039/507C07K2317/52C07K2317/92Y02A50/30C12N2770/24022
Inventor ROBBIANI, DAVIDENUSSENZWEIG, MICHEL
Owner THE ROCKEFELLER UNIV
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