ArticleScientific reports2025
Incorporation of recombinant proteins into extracellular vesicles by Lactococcus cremoris.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
5 citing papers in PubMed.
- Cargo-driven extracellular vesicles as pharmaceutical nanocarriers: A pharmaceutics-oriented comparison of animal exosomes and plant-derived exosome-like nanoparticles.International journal of pharmaceutics: X · 2026Review
- Environmental cues shape extracellular vesicles biogenesis and function in Streptococcus pneumoniae.BMC microbiology · 2026Article
- Whole-genome sequencing and probiotic properties of Lactobacillus helveticus KM7 isolated from the gut of the Chinese honey bee (Apis cerana): A promising exopolysaccharide-producing strain.BMC microbiology · 2025Article
- A practical protocol for correlative confocal fluorescence and transmission electron microscopy characterization of extracellular vesicles.Microbiology spectrum · 2025Article
- Probiotic-derived extracellular vesicles: a novel weapon against viral infections.Bioscience of microbiota, food and health · 2025Review
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Authors and funding
6 authors.
Funding
Abstract
Extracellular vesicles (EVs) are nanosized lipid bilayer particles released by various cellular organisms that carry an array of bioactive molecules. EVs have diagnostic potential, as they play a role in intercellular interspecies communication, and could be applied in drug delivery. In contrast to mammalian cell-derived EVs, the study of EVs from bacteria, particularly Gram-positive bacteria, received less research attention. This study aimed to investigate the production of EVs by lactic acid bacterium Lactococcus cremoris NZ9000 and to examine the impact of recombinant protein expression on their formation and protein content. Four different recombinant proteins were expressed in L. cremoris NZ9000, in different forms of expression and combinations, and the produced EVs were isolated using the standard ultracentrifugation method. The presence of vesicular structures (50-200 nm) in the samples was confirmed by transmission electron microscopy and by flow cytometry using membrane-specific stain. Mass spectrometry analyses confirmed the presence of recombinant proteins in the EVs fraction, with amounts ranging from 13.17 to 100%, highlighting their significant incorporation into the vesicles, together with intrinsic L. cremoris NZ9000 proteins that were either more abundant in the cytoplasm (ribosomal proteins, metabolic enzymes) or present in the membrane. The presence of the most abundant lactococcal proteins in EVs fraction suggests that protein cargo-loading of EVs in L. cremoris NZ9000 is not regulated. However, our data suggests that L. cremoris NZ9000 genetically engineered to express recombinant proteins can produce EVs containing these proteins in scalable manner. As L. cremoris NZ9000 is considered safe bacterium, EVs from L. cremoris NZ9000 could have several advantages over EVs from other bacteria, implying possible biotechnological applications, e.g. in therapeutic protein delivery.
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Registered trials
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