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In Vitro Anti-HIV-1 Activity of Fucoidans from Brown Algae
Marina N Nosik1, Natalya V Krylova2, Roza V Usoltseva3
1I.I. Mechnikov Institute of Vaccines and Sera, 105064 Moscow, Russia.
Marine Drugs
|August 28, 2024
Summary
Marine fucoidans show promise in suppressing human immunodeficiency virus (HIV) replication. A study found these compounds effectively inhibit HIV-1, particularly by blocking early stages of virus-cell interaction.
Area of Science:
- Marine biotechnology
- Virology
- Natural product chemistry
Background:
- Antiretroviral drug resistance and intolerance necessitate novel HIV treatments.
- Marine natural products, specifically fucoidans, are emerging as potential antiviral agents.
- Fucoidans derived from brown algae are investigated for their anti-HIV-1 properties.
Purpose of the Study:
- To evaluate the in vitro anti-HIV-1 activity of fucoidans from various brown algae species.
- To identify fucoidan compounds that can effectively suppress HIV replication.
- To understand the mechanisms of action of fucoidans against HIV-1.
Main Methods:
- In vitro assessment of anti-HIV-1 activity.
- Testing fucoidans from six different brown algae species: Alaria marginata, Alaria ochotensis, Laminaria longipes, Saccharina cichorioides, Saccharina gurianovae, and Tauya basicrassa.
- Analysis of inhibition at different stages of the HIV-1 life cycle, including virus-cell interaction.
Main Results:
- All tested fucoidans demonstrated significant inhibition of HIV-1 replication.
- Fucoidans affected early stages of virus-cell interaction, including attachment and entry.
- Fucoidan from Saccharina cichorioides exhibited the highest inhibitory activity with a selectivity index (SI) > 160.
Conclusions:
- Fucoidans from marine brown algae possess potent anti-HIV-1 activity.
- These fucoidans offer a potential alternative for managing HIV infection, particularly against resistant strains.
- Saccharina cichorioides fucoidan is a promising candidate for further development as an anti-HIV agent.
