Improved Mucosal Immune Response During Vaccination

Enhancing the mucosal (IgA) immune response by transiently blocking a specific cellular subset during vaccination.

The Need: Enhancing Mucosal Immune Response for Effective Vaccination

Infectious agents primarily invade the body through mucosal tissues, necessitating a robust immune response at these vulnerable sites. However, conventional vaccines often fail to induce sufficient immunoglobulin-A (IgA) antibodies, which play a crucial role in protecting mucosal surfaces against bacterial and viral pathogens. Thus, there exists a critical need for a technology that can bolster the production of mucosal IgA antibodies and enable more effective vaccines to be administered via mucosal routes.

The Technology: Advancing Mucosal IgA Response

The disclosed technology presents a groundbreaking solution to enhance the efficacy of vaccines by promoting the generation of mucosal IgA antibodies. A subset of myeloid cells has been identified as an impediment to the production of IgA by B lymphocytes. This technology introduces compositions and methods that limit the recruitment of these inhibitory cells at sites where antibody responses develop post-immunization. By blocking the function of these cells, the technology facilitates unimpeded production of IgA antibodies by B lymphocytes.

Commercial Applications:

  • Enhancement of vaccine effectiveness for bacterial and viral antigens through heightened mucosal IgA response.
  • Utilization of the technology to improve immunization outcomes for a broad range of vaccines, regardless of their delivery route.
  • Enabling the induction of antigen-specific IgA in both serum and mucosal secretions for vaccines administered via mucosal routes (oral or intranasal).
  • Facilitating the induction of mucosal IgA response for vaccines administered through non-mucosal routes, such as intramuscular, subcutaneous, sublingual, epicutaneous, or intravaginal administrations.
  • Enhancement or induction of IgA response for vaccines that typically promote IgG response in subjects, including bacterial, viral, protozoa, fungi, helminth, and ectoparasite antigens.


  • Improved immune response: By promoting mucosal IgA antibodies, the technology strengthens the body's defense against infectious agents at vulnerable mucosal sites, leading to enhanced protection.
  • Versatility: The technology's broad-spectrum applicability enables its integration with various vaccine formulations, making it a versatile and adaptable tool for vaccine development.
  • Enhanced mucosal immunity: The technology's adjuvant composition induces antigen-specific IgA not only in the serum but also at mucosal surfaces, thereby enhancing overall mucosal immunity.
  • Diverse administration options: The technology allows for flexible administration methods, including intranasal, intramuscular, subcutaneous, and other routes, providing healthcare professionals with multiple options for vaccination.
  • Targeted neutrophil inhibition: The neutrophil inhibitor utilized in the technology precisely targets inhibitory cells, ensuring a selective and effective response to enhance IgA production.

In summary, this innovative technology represents a significant breakthrough in vaccine development, addressing the pressing need for a more robust mucosal immune response. Its broad applications and multiple advantages position it as a valuable asset for healthcare professionals seeking to improve vaccination outcomes and better protect individuals against a wide array of infectious threats.

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