RSV is a major cause of serious respiratory illness, particularly in infants, older adults, and people with weakened immune systems. The virus uses the attachment protein G to bind to host cells and the fusion protein F to enter them. Although approved RSV antibody products target F, no licensed antibody currently targets G.
This technology involves the development of lgG1 Fe variants designed to interact more effectively with the neonatal Fc receptor (FcRn) in a pH-dependent manner. By enhancing this interaction, these variants extend the serum half-life of therapeutic antibodies, reducing the need for frequent administration. This breakthrough holds the potential to make therapeutic antibody treatments more convenient, cost-effective, and accessible for a wide range of diseases.
The technology outlined in the document is focused on the discovery of novel biomarkers for Onchocerciasis, a parasitic disease also known as river blindness, which is transmitted by blackfly vectors. The document describes the identification of the first Onchocerca volvulus-encoded molecules that are adult-specific and can be used as markers for macrofilaricidal activity, which is the ability to kill adult worms.
The discovery of a secondary CD4-binding site has led to a breakthrough in the efficacy of HIV-1 neutralizing antibodies. Sanofi's development of trispecific antibodies incorporating this site promises enhanced neutralization and T-cell stimulation. This advancement diverges from prior methods by engrafting the FR3 loop of another antibody, granting new functional properties. The potential extension of this technique to bi- or tri-specific antibodies could transform HIV-1 therapeutic strategies.
The live-attenuated Nipah virus vaccines, based on recombinant Vesicular Stomatitis Virus (VSV) vectors, represent a groundbreaking approach to combating Nipah virus infections. These vaccines, expressing Nipah virus glycoprotein (G) or fusion protein (F), have demonstrated exceptional protective efficacy in animal models. Key advantages include their ability to replicate within the vaccinated individual, eliciting a robust immune response superior to non-replicating vaccine platforms.
This technology encompasses the discovery of broadly neutralizing antibodies against HIV-1, derived from the CAPRISA Donor CAP 256. These antibodies target the V1V2 epitope of the virus envelope and exhibit a high level of neutralization, particularly against Clade A and Clade C subtypes. With potential applications in therapeutic or prophylactic interventions against HIV-1, this discovery represents a significant advancement in the field, offering a novel approach to combating the virus.
The technology offers a novel and efficient method for inducing targeted DNA recombination using a tripartite fusion protein, LFn-NLS-Cre, in combination with anthrax toxin protective antigen (PA). This system enables precise genetic manipulation in cells carrying a gene flanked by loxP sites, allowing for specific recombination events. Unlike other inducible systems that require multiple injections, our technology requires only a single administration, reducing experimental complexity and stress on animals.
This technology includes monoclonal antibodies (mAb) that specifically and with high affinity bind the final complement components C3dg and C3d (subsequently referred to as C3d), which can be used to kill tumor cells that carry C3d on their cell surface. We show that tumor cells of patients treated with the therapeutic anti-CD20 mAb ofatumumab carry C3d on the cell surface and can bind and be killed by addition of anti-C3 mAbs. In contrast, further addition of more ofatumumab has only minimal effects.