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Related Experiment Video

Updated: Jul 10, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

S Sabbaj1, H Kiyono, J R McGhee

  • 1Department of Microbiology, Immunobiology Vaccine Center, University of Alabama at Birmingham Medical Center, Birmingham, Alabama, USA.

Biodrugs : Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
|February 1, 1997
PubMed
Summary

Oral vaccines stimulate immune cells in the gut, with different delivery methods influencing T helper cell responses. Researchers are developing novel vaccine strategies to enhance mucosal immunity for better disease protection.

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Area of Science:

  • Immunology
  • Vaccinology
  • Mucosal Immunity

Background:

  • Oral vaccine delivery targets specialized cells in the gastrointestinal tract, stimulating immune responses.
  • T helper cells differentiate into subsets (T(H)1 and T(H)2) with distinct cytokine profiles, influencing immune outcomes.
  • T(H)2 responses are crucial for mucosal immunity, promoting IgA production by B cells.

Purpose of the Study:

  • To explore how different antigen delivery systems influence immune responses, particularly for mucosal vaccination.
  • To highlight strategies for inducing desired T helper cell subsets (T(H)1 or T(H)2) for specific vaccine needs.
  • To review advancements in developing effective mucosal vaccines.

Main Methods:

  • Comparison of immune responses induced by different oral delivery systems, such as live attenuated Salmonella and cholera toxin.
  • Utilizing encapsulated antigens (polyglycolide microspheres, liposomes) and immune-stimulating complexes.
  • Development of attenuated viral and bacterial vectors for antigen delivery to mucosal sites.

Main Results:

  • Live attenuated Salmonella induces a dominant T(H)1 response, while cholera toxin elicits a T(H)2 response.
  • Various delivery systems, including encapsulation and immune complexes, facilitate oral antigen delivery and immune stimulation.
  • Progress in constructing viral and bacterial vectors (e.g., poliovirus, Salmonella typhi mutants) for mucosal antigen delivery.

Conclusions:

  • Antigen delivery systems significantly impact the type and outcome of immune responses, enabling tailored mucosal vaccination strategies.
  • Novel approaches, including adjuvants and cytokine coexpression, are being developed to enhance mucosal immunity.
  • Emerging technologies like nucleic acid vaccines and transgenic plants offer new avenues for inducing mucosal responses.

Related Experiment Videos

Last Updated: Jul 10, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013