Toxicology and biodistribution of plant-derived extracellular vesicles for drug delivery: Quality control, safety mechanisms, and translational testing priorities.
Naseem MT, Zaman W
Medicinal Plants
Plants you grow and eat — spinach, ginger, grapes — are being harvested for nanoscale particles that researchers want to use as drug delivery vehicles, meaning how those crops are grown, stored, and processed now has direct implications for human medicine.
Plants produce tiny bubble-like particles that carry biological messages between cells. Researchers are excited about using these particles to deliver drugs inside the human body because they come from natural sources. But this review warns that 'natural' doesn't mean 'safe' — the way plants are grown, harvested, and processed changes what's inside these particles, and we need much better safety testing before they're used as medicines.
Key Findings
Edible plant origin is not a sufficient safety guarantee — high doses, repeated dosing, or non-oral administration routes each introduce distinct toxicological risks that require independent testing.
Product quality variables including plant source, growth conditions, harvest timing, isolation method, and storage can substantially alter vesicle composition and biological activity, making batch consistency a central safety concern.
The authors propose a translational framework requiring minimum testing standards for identity, purity, potency, stability, microbial burden, endotoxin-like activity, pesticide residues, and heavy metals before clinical use.
chevron_right Technical Summary
Scientists reviewed the safety and tracking of tiny particles extracted from plants — called plant-derived extracellular vesicles — that are being explored as natural delivery vehicles for medicines. They found that coming from edible plants does not automatically make these particles safe, and that strict quality control is essential before they can be used in medical treatments.
Abstract Preview
Plant-derived extracellular vesicles and plant-derived exosome-like nanoparticles are increasingly investigated as natural nanocarriers for drug delivery and as bioactive materials with intrinsic t...
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