Evidence map›Paper›PMID 27686582›Full record

ArticleJournal of controlled release : official journal of the Controlled Release Society2016

Intracellular delivery and ultrasonic activation of folate receptor-targeted phase-change contrast agents in breast cancer cells in vitro.

Joseph P Marshalek, Paul S Sheeran, Pier Ingram, Paul A Dayton, Russell S Witte, Terry O Matsunaga

Abstract read
In one paragraph

Article in Journal of controlled release : official journal of the Controlled Release Society, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

31 citing papers in PubMed, 73 citations in OpenAlex.

  1. Article
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  4. Development andNanomedicine (London, England) · 2025
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  16. Review
  17. Frontiers in chemistry · 2022
    Article
  18. Review
  19. Article
  20. Phase-Change Materials for Controlled Release and Related Applications.Advanced materials (Deerfield Beach, Fla.) · 2020
    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

6 authors at 3 institutions in 2 countries.

Joseph P MarshalekDepartment of Medical Imaging, University of Arizona, Tucson, AZ, USA.
Paul S SheeranPhysical Sciences Department, Sunnybrook Research Institute, Toronto, ON, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
Pier IngramDepartment of Medical Imaging, University of Arizona, Tucson, AZ, USA.
Paul A DaytonJoint Department of Biomedical Engineering, The University of North Carolina and North Carolina State University, Chapel Hill, NC, USA.
Russell S WitteDepartment of Medical Imaging, University of Arizona, Tucson, AZ, USA.
Terry O MatsunagaDepartment of Medical Imaging, University of Arizona, Tucson, AZ, USA. Electronic address: tmatsunaga@radiology.arizona.edu.
Banner - University Medical Center Tucson · USSunnybrook Health Science Centre · CAUniversity of North Carolina at Chapel Hill · US

Funding

VITAMIN AP30CA023074 · NCI · UNIVERSITY OF ARIZONA · PI Teri L Bankhead · 1985 to 2026
$110.2M
Phase-Change Contrast Agents for Ultrasound Detection of Breast CancerR21CA185684 · NCI · UNIVERSITY OF ARIZONA · PI MATSUNAGA, TERRY ONICHI · 2014 to 2015
$350k
NCI NIH HHS P30 CA023074NCI NIH HHS R21 CA185684
6 · The paper itself

Abstract

Breast cancer is a diverse and complex disease that remains one of the leading causes of death among women. Novel, outside-of-the-box imaging and treatment methods are needed to supplement currently available technologies. In this study, we present evidence for the intracellular delivery and ultrasound-stimulated activation of folate receptor (FR)-targeted phase-change contrast agents (PCCAs) in MDA-MB-231 and MCF-7 breast cancer cells in vitro. PCCAs are lipid-coated, perfluorocarbon-filled particles formulated as nanoscale liquid droplets capable of vaporization into gaseous microbubbles for imaging or therapy. Cells were incubated with 1:1 decafluorobutane (DFB)/octafluoropropane (OFP) PCCAs for 1h, imaged via confocal microscopy, exposed to ultrasound (9MHz, MI=1.0 or 1.5), and imaged again after insonation. FR-targeted PCCAs were observed intracellularly in both cell lines, but uptake was significantly greater (p<0.001) in MDA-MB-231 cells (93.0% internalization at MI=1.0, 79.5% at MI=1.5) than MCF-7 cells (42.4% internalization at MI=1.0, 35.7% at MI=1.5). Folate incorporation increased the frequency of intracellular PCCA detection 45-fold for MDA-MB-231 cells and 7-fold for MCF-7 cells, relative to untargeted PCCAs. Intracellularly activated PCCAs ranged from 500nm to 6μm (IQR=800nm-1.5μm) with a mean diameter of 1.15±0.59 (SD) microns. The work presented herein demonstrates the feasibility of PCCA intracellular delivery and activation using breast cancer cells, illuminating a new platform toward intracellular imaging or therapeutic delivery with ultrasound.

Indexed as

Drug Delivery SystemsBreast NeoplasmsCell Line, TumorContrast MediaFemaleFluorocarbonsFolate Receptors, GPI-AnchoredHumansMCF-7 CellsMicroscopy, ConfocalParticle SizeTissue DistributionUltrasonicsContrast MediaFluorocarbonsFolate Receptors, GPI-AnchoredBreast cancerDecafluorobutaneDecafluorobutane (PubChem CID: 9638)Folate (PubChem CID: 6037)Folate receptorMicrobubbleNanodropletOctafluoropropaneOctafluoropropane (PubChem CID: 6432)PerfluorocarbonPhase-change contrast agentUltrasound

Identifiers

PMID27686582
PMCPMC5191940
OpenAlexW2523881127

What OpenQuestion holds

Textmetadata
LicenceTDM
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.