Evidence map›Paper›PMID 26763377›Full record

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

Identification of pancreatic tumors in vivo with ligand-targeted, pH responsive mesoporous silica nanoparticles by multispectral optoacoustic tomography.

Marie K Gurka, Dillon Pender, Phillip Chuong, Benjamin L Fouts, Alexander Sobelov, Molly W McNally, Megan Mezera, Shiao Y Woo, Lacey R McNally

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 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
6.6field-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

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 90 citations in OpenAlex.

  1. Pooled it
  2. Assessment of Breast Tumors Using Multispectral Optoacoustic Tomography in a Surgical Setting.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2025
    Trial
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  5. Optical and Optoacoustic Imaging.Recent results in cancer research. Fortschritte der Krebsforschung. Progres dans les recherches sur le cancer · 2026
    Review
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  8. 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

9 authors at 1 institution in 1 country.

Marie K GurkaDepartment of Radiation Oncology, University of Louisville, 529 S Jackson Street, Louisville, KY 40202, USA.
Dillon PenderDepartment of Medicine, University of Louisville, 505 S Hancock, Louisville, KY 40202, USA.
Phillip ChuongDepartment of Medicine, University of Louisville, 505 S Hancock, Louisville, KY 40202, USA.
Benjamin L FoutsDepartment of Medicine, University of Louisville, 505 S Hancock, Louisville, KY 40202, USA.
Alexander SobelovDepartment of Medicine, University of Louisville, 505 S Hancock, Louisville, KY 40202, USA.
Molly W McNallyDepartment of Medicine, University of Louisville, 505 S Hancock, Louisville, KY 40202, USA.
Megan MezeraDepartment of Radiation Oncology, University of Louisville, 529 S Jackson Street, Louisville, KY 40202, USA.
Shiao Y WooDepartment of Radiation Oncology, University of Louisville, 529 S Jackson Street, Louisville, KY 40202, USA.
Lacey R McNallyDepartment of Medicine, University of Louisville, 505 S Hancock, Louisville, KY 40202, USA. Electronic address: lacey_mcnally@hotmail.com.
University of Louisville · US

Funding

University of Louisville Cancer Education ProgramR25CA134283 · NCI · UNIVERSITY OF LOUISVILLE · PI HEIN, DAVID W, KIDD, LA CREIS RENEE · 2011 to 2022
$3.1M
NCI NIH HHS R25 CA134283
6 · The paper itself

Abstract

Despite significant efforts to translate nanotechnology for cancer application, lack of identification of biodistribution/accumulation of these nanovehicles in vivo remains a substantial barrier for successful implementation of theranostic nanoparticles in the clinic. The purpose of the study was to develop a tumor-targeted theranostic nanovehicle for pancreatic cancer detectable by multispectral optoacoustic tomography (MSOT). To improve the tumor specificity of our mesoporous silica nanoparticle (MSN), we utilized a dual targeting strategy: 1) an elevated tumor receptor, urokinase plasminogen activator receptor (UPAR), and 2) the acidic tumor microenvironment. The tumor specificity of the MSN particle was improved with the addition of both chitosan, targeting acidic pH, and urokinase plasminogen activator (UPA), targeting UPAR. Drug release assays confirmed pH responsive release of gemcitabine in vitro. The UPAR specific binding of MSN-UPA nanoparticles was confirmed by reduction in fluorescence signal following MSN-UPA nanoparticle treatment in UPAR positive cells blocked with a UPAR-blocking antibody. Based upon Indocyanine Green encapsulation within the nanoparticles, UPA ligand targeted MSNs demonstrated increased intensity compared to untargeted MSNs at both pH7.4 (7×) and 6.5 (20×); however the signal was much more pronounced at a pH of 6.5 using tissue phantoms (p<0.05). In vivo, MSN-UPA particles demonstrated orthotopic pancreatic tumor specific accumulation compared to liver or kidney as identified using multispectral optoacoustic tomography (p<0.05) and confirmed by ex vivo analysis. By tracking in vivo nanoparticle biodistribution with MSOT, it was shown that pH responsive, ligand targeted MSNs preferentially bind to pancreatic tumors for payload delivery.

Indexed as

AnimalsCell Line, TumorChitosanDeoxycytidineDrug LiberationFemaleGemcitabineHumansHydrogen-Ion ConcentrationIndocyanine GreenLigandsMiceNanoparticlesPancreatic NeoplasmsParticle SizePhotoacoustic TechniquesChitosanDeoxycytidineGemcitabineIndocyanine GreenLigandsSilicon DioxideUrokinase-Type Plasminogen ActivatorMesoporous silicaNanomedicine multispectral optoacoustic tomographyPancreatic cancerTheranostics

Identifiers

PMID26763377
PMCPMC4870134
OpenAlexW2222810747

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.