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Polysaccharide biological response modifiers.

M Y K Leung1, C Liu, J C M Koon

  • 1Institute of Chinese Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, People's Republic of China.

Immunology Letters
|March 24, 2006
PubMed
Summary
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Biological response modifiers (BRMs) augment immune responses. This review focuses on polysaccharide BRMs, exploring their natural origins, immune-triggering mechanisms, and therapeutic potential in clinical trials.

Area of Science:

  • Immunology
  • Natural Products Chemistry

Background:

  • Biological response modifiers (BRMs) are substances that enhance the immune system's activity.
  • BRMs can be endogenous (cytokines) or exogenous, derived from natural sources like bacteria, fungi, algae, and plants.
  • Exogenous BRMs include nucleic acids, lipids, proteins, and polysaccharides, interacting with pattern recognition receptors to initiate immune responses.

Purpose of the Study:

  • To review the current understanding of polysaccharide-based biological response modifiers.
  • To highlight the natural occurrence and therapeutic potential of polysaccharide BRMs.
  • To summarize findings from human clinical trials involving polysaccharide BRMs.

Main Methods:

  • Literature review of scientific articles and clinical trial data.

Related Experiment Videos

  • Analysis of the chemical nature and biological origins of exogenous BRMs.
  • Examination of the immunomodulatory mechanisms of polysaccharide BRMs.

    • Main Results:

    • Polysaccharide BRMs are widely found in nature and exhibit diverse therapeutic activities, including anti-viral, anti-bacterial, anti-fungal, anti-parasitic, and anti-tumor effects.
    • Exogenous BRMs bind to pattern recognition receptors, triggering innate and adaptive immune responses.
    • Several polysaccharide BRMs have undergone testing in human clinical trials for their therapeutic efficacy.

    Conclusions:

    • Polysaccharide BRMs represent a significant class of immunomodulatory agents with broad therapeutic applications.
    • Their natural origin and ability to stimulate immune responses make them promising candidates for drug development.
    • Further research and clinical evaluation are warranted to fully harness the potential of polysaccharide BRMs in medicine.