Evidence map›Paper›PMID 31141569›Full record

ArticlePloS one2019

Circulating exosomes deliver free fatty acids from the bloodstream to cardiac cells: Possible role of CD36.

N A Garcia, H González-King, E Grueso, R Sánchez, A Martinez-Romero, B Jávega, J E O'Connor, P J Simons, A Handberg, P Sepúlveda

Abstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
–field-weighted citation impact
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

32 citing papers in PubMed.

  1. Review
  2. CD36 and Its Role in Obesity.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
    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

10 authors.

N A GarciaGECORP, Buenos Aires, Argentina.ORCID 0000-0001-6903-9972
H González-KingRegenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain.
E GruesoRegenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain.
R SánchezRegenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain.
A Martinez-RomeroJoint Research Unit of Cytomics CIPF-UVEG, Valencia, Spain.
B JávegaDepartment of Biochemistry, University of Valencia, Valencia, Spain.
J E O'ConnorJoint Research Unit for Cardiovascular Repair IISLAFE-CIPF, Valencia, Spain.
P J SimonsBioceros BV, Utrecht, The Netherlands.
A HandbergDepartment of Clinical Biochemistry, Aalborg University Hospital, Aalborg, Denmark.
P SepúlvedaRegenerative Medicine and Heart Transplantation Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain.ORCID 0000-0001-6071-7431

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Regulation of circulating free fatty acid (FFA) levels and delivery is crucial to maintain tissue homeostasis. Exosomes are nanomembranous vesicles that are released from diverse cell types and mediate intercellular communication by delivering bioactive molecules. Here, we sought to investigate the uptake of FFAs by circulating exosomes, the delivery of FFA-loaded exosomes to cardiac cells and the possible role of the FFA transporter CD36 in these processes. Circulating exosomes were purified from the serum of healthy donors after an overnight fast (F) or 20 minutes after a high caloric breakfast (postprandial, PP). Western blotting, Immunogold Electron Microscopy and FACS analysis of circulating exosomes showed that CD36 was expressed under both states, but was higher in postprandial-derived exosomes. Flow cytometry analysis showed that circulating exosomes were able to take-up FFA directly from serum. Importantly, preincubation of exosomes with a blocking CD36 antibody significantly impeded uptake of the FFA analogue BODIPY, pointing to the role of CD36 in FFA exosomal uptake. Finally, we found that circulating exosomes could delivery FFA analogue BODIPY into cardiac cells ex vivo and in vivo in a mice model. Overall, our results suggest a novel mechanism in which circulating exosomes can delivery FFAs from the bloodstream to cardiac tissue. Further studies will be necessary to understand this mechanism and, in particular, its potential involvement in metabolic pathologies such as obesity, diabetes and atherosclerosis.

Indexed as

AdultAnimalsAtherosclerosisCD36 AntigensCell LineDiabetes MellitusDisease Models, AnimalExosomesFatty Acids, NonesterifiedFemaleHumansMaleMiceMice, Inbred NODMice, SCIDMyocytes, CardiacCD36 AntigensCD36 protein, humanCd36 protein, ratFatty Acids, Nonesterified

Identifiers

PMID31141569
PMCPMC6541372

What OpenQuestion holds

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Registered trials

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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 OpenQuestion graph.