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Lactoferrin induced neuronal differentiation: A boon for brain tumours
Bhasker Sriramoju1, Rupinder K Kanwar1, Jagat R Kanwar1
1Nanomedicine Laboratory of Immunology and Molecular Biomedical Research (NLIMBR), School of Medicine, Faculty of Health, Deakin University, Geelong Technology Precinct, Pigdons Road, Waurn Ponds, Geelong, Victoria 3217, Australia.
Bovine lactoferrin (bLf) and iron-saturated bLf promote neuronal differentiation in neuroblastoma cells. These milk proteins reduce cell proliferation markers and influence key signaling pathways, suggesting potential therapeutic applications.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Neuroblastoma is a pediatric cancer with limited treatment options.
- Neuronal differentiation is a key process in nervous system development and can be a therapeutic strategy for cancers like neuroblastoma.
- Milk proteins, such as lactoferrin, possess various bioactive properties.
Purpose of the Study:
- To investigate the neuronal differentiating effects of bovine lactoferrin (bLf) and iron-saturated bLf (Fe-bLf) on neuroblastoma cells.
- To elucidate the molecular mechanisms underlying the observed differentiation, including the involvement of specific markers and signaling pathways.
Main Methods:
- Treatment of neuroblastoma cells with bLf and Fe-bLf.
- Analysis of neuronal differentiation markers (β-tubulin III, neurofilaments).
- Assessment of endogenous survivin levels and specific microRNAs (miRNA 584, miRNA214-3p).
- Investigation of PI3K and ERK signaling pathway activation.
Main Results:
- Both bLf and Fe-bLf induced neuronal differentiation, evidenced by increased expression of β-tubulin III and neurofilaments.
- Protein treatments led to reduced endogenous survivin, a marker of cell proliferation.
- bLf and Fe-bLf modulated miRNA 584 and miRNA214-3p levels, crucial for differentiation.
- bLf primarily activated the PI3K signaling pathway, while Fe-bLf activated both PI3K and ERK signaling pathways.
Conclusions:
- This study demonstrates for the first time that milk proteins, specifically bLf and Fe-bLf, possess neuronal differentiating effects on neuroblastoma cells.
- The observed effects are mediated through modulation of cell proliferation markers, microRNAs, and distinct signaling pathways (PI3K, ERK).
- These findings highlight the potential of bLf and Fe-bLf as therapeutic agents for neuroblastoma, warranting further clinical investigation.
