Evidence map›Paper›PMID 34784377›Full record

ArticlePloS one2021

Isolation of extra-cellular vesicles in the context of pancreatic adenocarcinomas: Addition of one stringent filtration step improves recovery of specific microRNAs.

Yi-Fan Xu, Xiaohui Xu, Kritisha Bhandari, Amy Gin, Chinthalapally V Rao, Katherine T Morris, Bethany N Hannafon, Wei-Qun Ding

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Exosome-Associated MTA1 in Circulation Is Elevated During Breast Cancer Progression.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. The role of Exosomal miRNAs in cancer.Journal of translational medicine · 2022
    Review
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 2 institutions in 2 countries.

Yi-Fan XuDepartment of Pathology, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Xiaohui XuDepartment of Pathology, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Kritisha BhandariDepartment of Pathology, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Amy GinDepartment of Pathology, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.ORCID 0000-0003-3385-9228
Chinthalapally V RaoDepartment of Medicine, Hematologic Oncology Section, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Katherine T MorrisDepartment of Surgery, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Bethany N HannafonDepartment of Obstetrics and Gynecology, Gynecologic Oncology Section, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.
Wei-Qun DingDepartment of Pathology, Stephenson Cancer Centre, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America.ORCID 0000-0001-7358-3700
University of Oklahoma Health Sciences Center · USSoochow University · CN

Funding

Structure-Function Studies of MsvR, a Methanogen-Specific Transcriptional RegulaP20GM103640 · NIGMS · UNIVERSITY OF OKLAHOMA · PI MOOERS, BLAINE H. M. · 2012 to 2021
$20.4M
The initiation of exosome microRNA signaling in pancreatic cancer cellsR03CA235208 · NCI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI DING, WEI-QUN · 2019 to 2020
$145k
NCI NIH HHS R03 CA235208NIGMS NIH HHS P20 GM103640
6 · The paper itself

Abstract

microRNAs (miRNA) in extracellular vesicles (EVs) have been investigated as potential biomarkers for pancreatic ductal adenocarcinoma (PDAC). However, a mixed population of EVs is often obtained using conventional exosome isolation methods for biomarker development. EVs are derived from different cellular processes and present in various sizes, therefore miRNA expression among them is undoubtedly different. We developed a simple protocol utilizing sequential filtration and ultracentrifugation to separate PDAC EVs into three groups, one with an average diameter of more than 220 nm, named operational 3 (OP3); one with average diameters between 100-220 nm, named operational 2 (OP2); and another with average diameters around 100 nm, named operational 1 (OP1)). EVs were isolated from conditioned cell culture media and plasma of human PDAC xenograft mice and early stage PDAC patients, and verified by nanoparticle tracking, western blot, and electronic microscopy. We demonstrate that exosome specific markers are only enriched in the OP1 group. qRT-PCR analysis of miRNA expression in EVs from PDAC cells revealed that expression of miR-196a and miR-1246, two previously identified miRNAs highly enriched in PDAC cell-derived exosomes, is significantly elevated in the OP1 group relative to the other EV groups. This was confirmed using plasma EVs from PDAC xenograft mice and patients with localized PDAC. Our results indicate that OP1 can be utilized for the identification of circulating EV miRNA signatures as potential biomarkers for PDAC.

Indexed as

AdenocarcinomaAgedAged, 80 and overAnimalsBlotting, WesternCell Line, TumorCirculating MicroRNAExosomesExtracellular VesiclesFemaleHumansMaleMiceMice, NudeMicroRNAsMicroscopy, ElectronCirculating MicroRNAMicroRNAs

Identifiers

PMID34784377
PMCPMC8594802
OpenAlexW3214675630

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.