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Related Experiment Videos

ISCOMs: an adjuvant with multiple functions

A Sjölander1, J C Cox, I G Barr

  • 1Immunology Department, CSL Limited, Parkville, Melbourne, Australia. asjoland@csl.com.au

Journal of Leukocyte Biology
|December 16, 1998
PubMed
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Immunostimulating complexes (ISCOMs) are novel vaccine adjuvants that enhance immune responses. Research shows ISCOMs effectively induce both antibody and cell-mediated immunity, progressing to human trials.

Area of Science:

  • Vaccinology
  • Immunology
  • Biochemistry

Background:

  • Aluminum salts are the sole widely adopted vaccine adjuvants.
  • Novel adjuvants are sought to elicit broader immune responses, including cell-mediated immunity.
  • Immunostimulating complexes (ISCOMs) show promise as multi-property adjuvants.

Purpose of the Study:

  • To review recent advancements in understanding ISCOM structure, composition, and preparation.
  • To explore the adjuvant functions of ISCOMs and their mechanisms of action on the immune system.

Main Methods:

  • Review of scientific literature on ISCOMs.
  • Analysis of ISCOM structure, composition, and preparation methods.
  • Examination of ISCOMs' effects on immune responses in animal models and human trials.

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Main Results:

  • ISCOMs are cage-like complexes (approx. 40 nm diameter) composed of cholesterol, lipid, immunogen, and saponins.
  • ISCOMs have demonstrated efficacy in promoting antibody responses and inducing T helper and cytotoxic T lymphocyte responses.
  • ISCOMs have advanced to Phase I and II human clinical trials.

Conclusions:

  • ISCOMs represent a promising class of novel vaccine adjuvants.
  • Further understanding of ISCOMs' structure and function can optimize their application in vaccine development.
  • ISCOMs have the potential to induce broad immune responses crucial for effective vaccination.