ArticleInternational journal of molecular sciences2024
Transcriptomic Signatures of Neuronally Derived Extracellular Vesicles Reveal the Presence of Olfactory Receptors in Clinical Samples from Traumatic Brain Injury Patients.
Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 3 citations in OpenAlex.
- The New Spine of Access to the Brain's Secrets: Extracellular Vesicles from Cerebrospinal Fluid Liquid Biopsies in CNS Diseases and Blood-Brain Barrier Research.Molecular neurobiology · 2026Review
- RBAD: The first database dedicated alterations of blood RNA in individuals with Alzheimer's disease and their clinical relevance.Neural regeneration research · 2026Article
- Direct RNA sequencing identified solute carrier family 2 member 1 to improve neurological outcome prediction after cardiac arrest.Intensive care medicine experimental · 2026Article
- Shared Transcriptomic and Epigenomic Signatures Between Traumatic Brain Injury and Music Exposure: An Integrative Proof of Concept.ASN neuro · 2026Article
- ICAM-5: A Novel Marker for Neuronally Derived Extracellular Vesicles.bioRxiv : the preprint server for biology · 2025Article
- Traumatic brain injury and post-injury sleep fragmentation differentially alter the microglial transcriptome.Frontiers in immunology · 2025Article
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Authors and funding
7 authors at 4 institutions in 1 country.
Funding
Abstract
Traumatic brain injury (TBI) is defined as an injury to the brain by external forces which can lead to cellular damage and the disruption of normal central nervous system functions. The recently approved blood-based biomarkers GFAP and UCH-L1 can only detect injuries which are detectable on CT, and are not sensitive enough to diagnose milder injuries or concussion. Exosomes are small microvesicles which are released from the cell as a part of extracellular communication in normal as well as diseased states. The objective of this study was to identify the messenger RNA content of the exosomes released by injured neurons to identify new potential blood-based biomarkers for TBI. Human severe traumatic brain injury samples were used for this study. RNA was isolated from neuronal exosomes and total transcriptomic sequencing was performed. RNA sequencing data from neuronal exosomes isolated from serum showed mRNA transcripts of several neuronal genes. In particular, mRNAs of several olfactory receptor genes were present at elevated concentrations in the neuronal exosomes. Some of these genes were OR10A6, OR14A2, OR6F1, OR1B1, and OR1L1. RNA sequencing data from exosomes isolated from CSF showed a similar elevation of these olfactory receptors. We further validated the expression of these samples in serum samples of mild TBI patients, and a similar up-regulation of these olfactory receptors was observed. The data from these experiments suggest that damage to the neurons in the olfactory neuroepithelium as well as in the brain following a TBI may cause the release of mRNA from these receptors in the exosomes. Hence, olfactory receptors can be further explored as biomarkers for the diagnosis of TBI.
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