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Related Experiment Videos

Interaction of hemoglobin S with anionic polysaccharides.

W P Winter, W R Seale, J Yodh

    The American Journal of Pediatric Hematology/Oncology
    |January 1, 1984
    PubMed
    Summary

    Anionic polysaccharides can prevent hemoglobin from gelling and may serve as potential anti-sickling agents. Heparin, delivered via liposomes, effectively blocks red blood cell sickling.

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    Area of Science:

    • Biochemistry
    • Hematology
    • Drug Discovery

    Background:

    • Previous research indicated hemoglobins bind to sulfated polysaccharides.
    • Understanding hemoglobin-polysaccharide interactions is key to developing treatments.

    Purpose of the Study:

    • To identify the hemoglobin binding site for polysaccharides.
    • To explore the anti-gelling and anti-sickling potential of anionic polysaccharides.

    Main Methods:

    • Citrate agar electrophoresis was used to study hemoglobin-polysaccharide interactions.
    • Various anionic polysaccharides were tested for anti-gelling activity.
    • Heparin was introduced into red blood cells using liposomes to assess anti-sickling effects.

    Main Results:

    • The binding site on hemoglobin was deduced.
    • Anionic polysaccharides (heparin, lambda-carrageenan, dermatan sulfate, fucoidan, agaropectin) demonstrated anti-gelling activity.
    • Liposome-delivered heparin successfully blocked red blood cell sickling.

    Conclusions:

    • Anionic polysaccharides exhibit anti-gelling properties against hemoglobins.
    • Heparin shows promise as an anti-sickling agent when delivered intracellularly.
    • These polysaccharides are potential candidates for further investigation as anti-sickling therapeutics due to their solubility and low toxicity.

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