ArticleParasites & vectors2024
The role of Rab27 in tick extracellular vesicle biogenesis and pathogen infection.
Article in Parasites & vectors, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 12 citations in OpenAlex.
- Exosome biogenesis in arthropods: conserved mechanisms, experimental evidence, and emerging directions.Annals of the Entomological Society of America · 2026Review
- Molecular Profiling of Extracellular Vesicles Isolated from Boar Reproductive Fluids.Journal of extracellular vesicles · 2026Article
- Tick Extracellular Vesicles Alter Epidermal Keratinocyte Function.The Journal of investigative dermatology · 2026Article
- Blood feeding triggers the terminal differentiation of precursor cells in tick salivary glands.Science advances · 2026Article
- Mechanisms of tumor-derived extracellular vesicle-mediated immunometabolic reprogramming and immunotherapeutic resistance.Molecular cancer · 2026Review
- The role and prospects of extracellular vesicles in advanced drug and vaccine delivery.Frontiers in immunology · 2026Review
- Rab27a-mediated exosome secretion facilitates classical swine fever virus release and immune evasion.Journal of virology · 2025Article
- Extracellular Vesicles in Arthropods: Biogenesis, Functions, Isolation Methods and Applications.Journal of extracellular vesicles · 2025Review
- Review
- Identification of PotentialVaccines · 2025Article
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9 authors at 4 institutions in 1 country.
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Abstract
backgroundThe blacklegged tick, Ixodes scapularis, transmits most vector-borne diseases in the US. It vectors seven pathogens of public health relevance, including the emerging human pathogen Anaplasma phagocytophilum. Nevertheless, it remains critically understudied compared to other arthropod vectors. Ixodes scapularis releases a variety of molecules that assist in the modulation of host responses. Recently, it was found that extracellular vesicles (EVs) carry several of these molecules and may impact microbial transmission to the mammalian host. EV biogenesis has been studied in mammalian systems and is relatively well understood, but the molecular players important for the formation and secretion of EVs in arthropods of public health relevance remain elusive. RabGTPases are among the major molecular players in mammalian EV biogenesis. They influence membrane identity and vesicle budding, uncoating, and motility.
methodsUsing BLAST, an in silico pathway for EV biogenesis in ticks was re-constructed. We identified Rab27 for further study. EVs were collected from ISE6 tick cells after knocking down rab27 to examine its role in tick EV biogenesis. Ixodes scapularis nymphs were injected with small interfering RNAs to knock down rab27 and then fed on naïve and A. phagocytophilum-infected mice to explore the importance of rab27 in tick feeding and bacterial acquisition.
resultsOur BLAST analysis identified several of the proteins involved in EV biogenesis in ticks, including Rab27. We show that silencing rab27 in I. scapularis impacts tick fitness. Additionally, ticks acquire less A. phagocytophilum after rab27 silencing. Experiments in the tick ISE6 cell line show that silencing of rab27 causes a distinct range profile of tick EVs, indicating that Rab27 is needed to regulate EV biogenesis.
conclusionsRab27 is needed for successful tick feeding and may be important for acquiring A. phagocytophilum during a blood meal. Additionally, silencing rab27 in tick cells results in a shift of extracellular vesicle size. Overall, we have observed that Rab27 plays a key role in tick EV biogenesis and the tripartite interactions among the vector, the mammalian host, and a microbe it encounters.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.