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Milk Proteins and Their Peptide Fragments Show Anti-HIV Activity

RPEP-007132002Berkhout, Ben; van Wamel, Jeroen L B; Beljaars, Leonie; Meijer, Dirk K F; Visser, Servaas; Floris, René
In VitroPreliminary evidence
The takeaway

Native lactoferrin and several milk-derived peptide fragments inhibited HIV entry into cells, with lactoferricin and other charged peptides/proteins showing the strongest antiviral activity.

Natural anti-HIV

Bovine lactoferrin and lactoferricin blocked HIV cell entry — milk proteins as natural antivirals for potential prevention applications

What the researchers found

Native bovine lactoferrin and derived peptides (lactoferricin) inhibited HIV entry into cells, with positively charged proteins/peptides showing the strongest activity, supporting milk-derived compounds as natural antivirals.

Why it matters

HIV prevention remains a global priority. Natural milk-derived antivirals that block virus entry could complement existing prevention strategies, particularly in resource-limited settings where milk products are accessible.

How the study worked

In-vitro antiviral screening of purified bovine milk proteins and peptide fragments against HIV-1 entry using cell-based infection assays.

What this study cannot tell us

In-vitro activity. Concentrations required for HIV inhibition may not be achievable through dietary consumption. Clinical anti-HIV efficacy not demonstrated.

How to read the evidence

Preliminary in-vitro evidence from comprehensive screening with clear mechanism (entry blockade) identification.

When this study was published

Published in 2002. Lactoferrin's antiviral properties have been further confirmed against multiple viruses including SARS-CoV-2.

The bigger picture

Natural food-derived antivirals offer advantages: safety, accessibility, and low cost. Milk proteins as HIV entry blockers could inform both nutraceutical approaches and topical microbicide development.

Questions still open

  • Could lactoferrin supplementation reduce HIV transmission?
  • Can lactoferricin-based microbicides prevent sexual HIV transmission?
  • Do human milk proteins show similar anti-HIV activity?

Common questions

Can milk fight HIV?
In lab tests, milk protein lactoferrin blocked HIV from entering human cells. This doesn't mean drinking milk prevents HIV, but lactoferrin-based products could potentially be developed as prevention tools.
Is lactoferrin used as an antiviral?
Lactoferrin supplements are available and have shown antiviral activity against multiple viruses in lab studies. Clinical evidence for HIV prevention is still limited, but lactoferrin's broad antiviral properties are well-documented.

Read the original research

Characterization of the anti-HIV effects of native lactoferrin and other milk proteins and protein-derived peptides.

Antiviral research, 55(2), 341-55

View on PubMed ↗

Citation

Berkhout, Ben; van Wamel, Jeroen L B; Beljaars, Leonie; Meijer, Dirk K F; Visser, Servaas; Floris, René. (2002). Characterization of the anti-HIV effects of native lactoferrin and other milk proteins and protein-derived peptides.. Antiviral research, 55(2), 341-55.