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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/182845
Toward an Understanding of Extracellular tRNA Biology
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Extracellular RNAs (exRNAs) including abundant full length tRNAs and tRNA fragments (tRFs) have recently garnered attention as a promising source of biomarkers and a novel mediator in cell-to-cell communication in eukaryotes. Depending on the physiological state of cells, tRNAs/tRFs are released to the extracellular space either contained in extracellular vesicles (EVs) or free, through a mechanism that is largely unknown. In this perspective article, we propose that extracellular tRNAs (ex-tRNAs) and/or extracellular tRFs (ex-tRFs) are relevant paracrine signaling molecules whose activity depends on the mechanisms of release by source cells and capture by recipient cells. We speculate on how ex-tRNA/ex-tRFs orchestrate the effects in target cells, depending on the type of sequence and the mechanisms of uptake. We further propose that tRNA modifications may be playing important roles in ex-tRNA biology.
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GABRIEL TORRES, Adrián and MARTÍ PUIG, Eulàlia. Toward an Understanding of Extracellular tRNA Biology. Frontiers In Molecular Biosciences. 2021. ISSN 2296-889X. [consulted: 6 of June of 2026]. Available at: https://hdl.handle.net/2445/182845