Evidence map›Paper›PMID 38578831›Full record

ArticleCell reports2024

Human brain small extracellular vesicles contain selectively packaged, full-length mRNA.

Linnea S Ransom, Christine S Liu, Emily Dunsmore, Carter R Palmer, Juliet Nicodemus, Derya Ziomek, Nyssa Williams, Jerold Chun

Open access · goldAbstract read
In one paragraph

Article in Cell reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
5.4field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
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  8. Article
  9. Article
  10. Extracellular Vesicles in Tauopathies: Mechanisms and Applications.International journal of molecular sciences · 2026
    Review
  11. Article
  12. Article
  13. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Linnea S RansomBiomedical Sciences Graduate Program, School of Medicine, University of California, San Diego, La Jolla, CA, USA; Center for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
Christine S LiuCenter for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
Emily DunsmoreCenter for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
Carter R PalmerCenter for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
Juliet NicodemusCenter for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
Derya ZiomekCenter for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
Nyssa WilliamsCenter for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA.
Jerold ChunCenter for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA. Electronic address: jchun@sbpdiscovery.org.
Sanford Burnham Prebys Medical Discovery Institute · US

Funding

GRADUATE TRAINING IN CELLULAR &MOLECULAR PHARMACOLOGYT32GM007752 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI BROWN, JOAN HELLER, HANDEL, TRACY M · 1985 to 2023
$13.5M
Altered reverse transcriptase-dependent gene diversification mechanisms in Alzheimer's disease brainsR01AG065541 · NIA · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI CHUN, JEROLD · 2020 to 2024
$4.8M
Transformative research on somatic gene recombination in the normal and Alzheimer's disease-related dementia brainR01AG071465 · NIA · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI CHUN, JEROLD · 2020 to 2024
$4.6M
NIA NIH HHS R01 AG065541NIA NIH HHS R01 AG071465
6 · The paper itself

Abstract

Brain cells release and take up small extracellular vesicles (sEVs) containing bioactive nucleic acids. sEV exchange is hypothesized to contribute to stereotyped spread of neuropathological changes in the diseased brain. We assess mRNA from sEVs of postmortem brain from non-diseased (ND) individuals and those with Alzheimer's disease (AD) using short- and long-read sequencing. sEV transcriptomes are distinct from those of bulk tissue, showing enrichment for genes including mRNAs encoding ribosomal proteins and transposable elements such as human-specific LINE-1 (L1Hs). AD versus ND sEVs show enrichment of inflammation-related mRNAs and depletion of synaptic signaling mRNAs. sEV mRNAs from cultured murine primary neurons, astrocytes, or microglia show similarities to human brain sEVs and reveal cell-type-specific packaging. Approximately 80% of neural sEV transcripts sequenced using long-read sequencing are full length. Motif analyses of sEV-enriched isoforms elucidate RNA-binding proteins that may be associated with sEV loading. Collectively, we show that mRNA in brain sEVs is intact, selectively packaged, and altered in disease.

Indexed as

Alzheimer DiseaseBrainExtracellular VesiclesRNA, MessengerAnimalsAstrocytesHumansMiceMice, Inbred C57BLMicrogliaNeuronsTranscriptomeRNA, MessengerAlzheimer's diseaseCP: Cell biologyCP: Neuroscienceexosomesextracellular vesicleshuman brainlong-read sequencingRNA-binding proteinsRNA-Seq

Identifiers

PMID38578831
PMCPMC13135479
OpenAlexW4393925489

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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 OpenQuestion graph.