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Purification and microRNA Profiling of Exosomes Derived from Blood and Culture Media
Published on: June 14, 2013
Milk exosomes: beyond dietary microRNAs
1Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE USA.
Abstract:
Extracellular vesicles deliver a variety of cargos to recipient cells, including the delivery of cargos in dietary vesicles from bovine milk to non-bovine species. The rate of discovery in this important line of research is slowed by a controversy whether the delivery and bioactivity of a single class of vesicle cargos, microRNAs, are real or not. This opinion paper argues that the evidence in support of the bioavailability of microRNAs encapsulated in dietary exosomes outweighs the evidence produced by scholars doubting that phenomenon is real. Importantly, this paper posits that the time is ripe to look beyond microRNA cargos and pursue innovative pathways through which dietary exosomes alter metabolism. Here, we highlight potentially fruitful lines of exploration.
Insights
Dietary exosomes from bovine milk deliver microRNAs and other bioactive molecules to non-bovine species. Evidence supports the bioavailability of these microRNAs, prompting further research into how exosomes impact metabolism.
Area of Science:
- Nutrition
- Cell Biology
- Biochemistry
Background:
- Dietary exosomes, particularly from bovine milk, are recognized for their ability to transport various cargos to recipient cells across species.
- A scientific debate exists regarding the bioavailability and bioactivity of microRNAs (miRNAs) delivered via these dietary exosomes.
Discussion:
- This paper evaluates the existing evidence, concluding that the data supporting miRNA bioavailability within dietary exosomes is more substantial than the evidence challenging it.
- The scientific community is urged to move beyond the microRNA controversy and explore broader mechanisms of exosome-mediated metabolic alteration.
Key Insights:
- The bioavailability of microRNAs encapsulated in dietary exosomes is supported by compelling scientific evidence.
- The functional impact of dietary exosomes extends beyond microRNAs, influencing host metabolism through diverse pathways.
Outlook:
- Future research should focus on elucidating the novel mechanisms by which dietary exosomes modulate host metabolism.
- Exploring other exosomal cargos and their interactions with recipient cells presents a promising avenue for nutritional and metabolic research.
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