Natural Polysaccharides with Immunomodulatory Activities.

Area of Science:

• Biochemistry
• Immunology
• Natural Products Chemistry

Background:

• Natural polysaccharides are macromolecules sourced from plants, fungi, algae, animals, and bacteria.
• Their monosaccharide composition and glucosidic bonds vary significantly based on origin.
• These compounds exhibit a wide range of biological activities, including antitumor, anticoagulant, antioxidative, antiviral, immunomodulatory, antihyperlipidemic, and antihepatotoxic effects.

Purpose of the Study:

• To summarize the structural characteristics of natural polysaccharides.
• To review their immunostimulatory activity and immunomodulatory mechanisms.
• To provide an overview of representative natural polysaccharide immunomodulators for potential therapeutic applications.

Main Methods:

• Literature review and synthesis of existing research on natural polysaccharides.
• Analysis of structural features influencing biological activities.
• Compilation of data on immunostimulatory effects and mechanisms of action.

Main Results:

• Natural polysaccharides possess diverse structural features that dictate their biological functions.
• Significant variations in monosaccharide composition and glucosidic linkages contribute to their multifaceted activities.
• Numerous natural polysaccharides demonstrate potent immunomodulatory potential.

Conclusions:

• The structural characteristics of natural polysaccharides are key to their biological activities.
• Further research into polysaccharide immunomodulators could lead to novel preventive or therapeutic strategies.
• Understanding their mechanisms of action is crucial for developing targeted immunomodulatory agents.