Lactoferricin B, a peptide from bovine milk protein, induces apoptosis in human leukemia cells through reactive oxygen species generation.
50 μg/ml Lfcin-BInduced dose-dependent apoptosis in human leukemia cells through reactive oxygen species generation
What the researchers found
Lactoferricin B at concentrations up to 50 μg/ml induced dose- and time-dependent apoptosis in THP-1 human monocytic leukemia cells, with reactive oxygen species playing a key mechanistic role.
Why it matters
Identifying natural food-derived peptides with anticancer activity opens possibilities for novel therapeutic agents with potentially better safety profiles than conventional chemotherapy drugs.
How the study worked
In vitro cell culture study using THP-1 human monocytic leukemia cells, apoptosis assays, ROS measurement, and antioxidant intervention to confirm the oxidative stress mechanism.
What this study cannot tell us
Single cell line tested (THP-1). In vitro only — no animal or human data. Selectivity for cancer cells over normal cells not fully characterized. Bovine-derived peptide may have different activity than human lactoferricin.
How to read the evidence
Early-stage in vitro study demonstrating a novel mechanism. Promising but requires extensive validation in animal models and human studies.
When this study was published
Published in 1997, this was among the first studies to demonstrate lactoferricin's anticancer properties. Subsequent research has expanded on these findings.
The bigger picture
Lactoferricin is part of a growing body of research on bioactive peptides derived from food proteins. Its ability to selectively kill cancer cells through oxidative stress suggests that milk-derived peptides may have therapeutic applications beyond nutrition, contributing to the field of peptide-based oncology.
Questions still open
- Does lactoferricin show selectivity for cancer cells over healthy cells?
- Could lactoferricin be effective against solid tumors or only hematological cancers?
- What is the optimal delivery method to achieve therapeutic concentrations in vivo?
Common questions
What is lactoferricin?
Does drinking milk give you anticancer benefits from lactoferricin?
Read the original research
Apoptosis in human leukemic cells induced by lactoferricin, a bovine milk protein-derived peptide: involvement of reactive oxygen species.
Biochemical and biophysical research communications, 237(3), 624-8
Citation
Yoo, Y C; Watanabe, R; Koike, Y; Mitobe, M; Shimazaki, K; Watanabe, S; Azuma, I. (1997). Apoptosis in human leukemic cells induced by lactoferricin, a bovine milk protein-derived peptide: involvement of reactive oxygen species.. Biochemical and biophysical research communications, 237(3), 624-8.