Evidence map›Paper›PMID 24850845›Full record

ArticleClinical cancer research : an official journal of the American Association for Cancer Research2014

A high-affinity, high-stability photoacoustic agent for imaging gastrin-releasing peptide receptor in prostate cancer.

Jelena Levi, Ataya Sathirachinda, Sanjiv S Gambhir

Open access · bronzeAbstract read
In one paragraph

Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

30 citing papers in PubMed, 46 citations in OpenAlex.

  1. Review
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  5. Photoacoustic imaging systems based on clinical ultrasound platform.Experimental biology and medicine (Maywood, N.J.) · 2022
    Review
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  15. Photoacoustic clinical imaging.Photoacoustics · 2019
    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

3 authors at 1 institution in 1 country.

Jelena LeviAuthors' Affiliations: Canary Center at Stanford for Cancer Early Detection; and Molecular Imaging Program at Stanford, Department of Radiology and Bio-X Program, Stanford University, Palo Alto, Stanford, California.
Ataya SathirachindaAuthors' Affiliations: Canary Center at Stanford for Cancer Early Detection; and Molecular Imaging Program at Stanford, Department of Radiology and Bio-X Program, Stanford University, Palo Alto, Stanford, California.
Sanjiv S GambhirAuthors' Affiliations: Canary Center at Stanford for Cancer Early Detection; and Molecular Imaging Program at Stanford, Department of Radiology and Bio-X Program, Stanford University, Palo Alto, Stanford, California sgambhir@stanford.edu.
Stanford University · US

Funding

Stanford Nanocharacterization LaboratoryU54CA119367 · NCI · STANFORD UNIVERSITY · PI GAMBHIR, SANJIV S · 2006 to 2010
$19.8M
Small Animal ImagingP50CA114747 · NCI · STANFORD UNIVERSITY · PI RAO, JIANGHONG · 2005 to 2014
$18.2M
NCI NIH HHS P50 CA114747NCI NIH HHS U54 CA119367
6 · The paper itself

Abstract

purposeTo evaluate the utility of targeted photoacoustic imaging (PAI) in providing molecular information to complement intrinsic functional and anatomical details of the vasculature within prostate lesion. EXPERIMENTAL

designWe developed a PAI agent, AA3G-740, that targets gastrin-releasing peptide receptor (GRPR), found to be highly overexpressed in prostate cancer. The binding specificity of the agent was evaluated in human prostate cancer cell lines, PC3 and LNCaP, and antagonist properties determined by cell internalization and intracellular calcium mobilization studies. The imaging sensitivity was assessed for the agent itself and for the PC3 cells labeled with agent. The in vivo stability of the agent was determined in human plasma and in the blood of living mice. The in vivo binding of the agent was evaluated in PC3 prostate tumor models in mice, and was validated ex vivo by optical imaging.

resultsAA3G-740 demonstrated strong and specific binding to GRPR. The sensitivity of detection in vitro indicated suitability of the agent to image very small lesions. In mice, the agent was able to bind to GRPR even in poorly vascularized tumors leading to nearly 2-fold difference in photoacoustic signal relative to the control agent.

conclusionsThe ability to image both vasculature and molecular profile outside the blood vessels gives molecular PAI a unique advantage over currently used imaging techniques. The imaging method presented here can find application both in diagnosis and in image-guided biopsy.

Indexed as

Molecular ProbesOligopeptidesAnimalsCell Line, TumorDiagnostic ImagingDrug StabilityHumansMaleMice, NudeNeoplasm TransplantationPhotoacoustic TechniquesProstatic NeoplasmsProtein BindingReceptors, BombesinAA3G-740Molecular ProbesOligopeptidesReceptors, Bombesin

Identifiers

PMID24850845
PMCPMC4121111
OpenAlexW2117271612

What OpenQuestion holds

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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.