Plant hvu-MIR168-3p enhances expression of glucose transporter 1 (SLC2A1) in human cells by silencing genes related to mitochondrial electron transport chain complex I.
Level 5 - mechanism / opinion, no new human data
Preclinical in vitro and in vivo animal/cell research with no direct human clinical data.
PubMed 34856354 · doi:10.1016/j.jnutbio.2021.108922
What was done
Researchers investigated the effects of plant microRNA hvu-MIR168-3p, derived from nanoparticles of rice aleurone cells, in human cells in vitro and in an in vivo model. They measured the expression of mitochondrial electron transport chain complex I-related genes and glucose transporter 1 (GLUT1/SLC2A1) RNA and protein levels in vitro, and assessed blood glucose levels in vivo.
What was found
The authors reported that hvu-MIR168-3p down-regulated mitochondrial complex I-related genes, up-regulated GLUT1 protein and RNA expression in human cells, and decreased blood glucose levels in vivo. No specific numerical values, sample sizes, or statistical metrics were provided in the abstract.
Why it matters
The findings propose a potential cross-kingdom mechanism where dietary plant microRNAs regulate mammalian cellular metabolism and glucose transport.
Limits
The study is limited to preclinical in vitro and in vivo models with no human subjects. The abstract does not disclose the animal species, sample sizes, doses, effect sizes, or quantitative data.
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