Evidence map›Paper›PMID 25326233›Full record

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

Applications of immunoPET: using 124I-anti-PSCA A11 minibody for imaging disease progression and response to therapy in mouse xenograft models of prostate cancer.

Scott M Knowles, Richard Tavaré, Kirstin A Zettlitz, Matthew M Rochefort, Felix B Salazar, Ziyue Karen Jiang, Robert E Reiter, Anna M Wu

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

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.2field-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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Review
  7. Evaluation of [Molecular imaging and biology · 2020
    Article
  8. Article
  9. Review
  10. [Molecular imaging and biology · 2020
    Article
  11. Article
  12. Review
  13. Journal of labelled compounds & radiopharmaceuticals · 2018
    Review
  14. Aligning physics and physiology: Engineering antibodies for radionuclide delivery.Journal of labelled compounds & radiopharmaceuticals · 2018
    Review
  15. Article
  16. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Scott M KnowlesCrump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California.
Richard TavaréCrump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California.
Kirstin A ZettlitzCrump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California.
Matthew M RochefortDepartment of Surgery, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California.
Felix B SalazarCrump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California.
Ziyue Karen JiangCrump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California. Department of Urology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California.
Robert E ReiterDepartment of Urology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California.
Anna M WuCrump Institute for Molecular Imaging, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California-Los Angeles, Los Angeles, California. awu@mednet.ucla.edu.
University of California, Los Angeles · US

Funding

Women's CancersP30CA016042 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Zoran Galic · 1985 to 2026
$134.5M
UCLA SPORE IN PROSTATE CANCERP50CA092131 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI REITER, ROBERT E · 2002 to 2023
$42.6M
UCLA-Caltech Medical Scientist Training ProgramT32GM008042 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI AJIJOLA, OLUJIMI A, DAWSON, DAVID WAYNE · 1985 to 2023
$29.9M
Multifunctional immunoPET tracers for pancreatic and prostate cancerR01CA174294 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI REITER, ROBERT E, WU, ANNA M · 2013 to 2020
$3.3M
AntiPSCA A11 minibody for diagnosis and therapy of prostate cancerF30CA165824 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KNOWLES, SCOTT MATTHEW · 2012 to 2015
$158k
NCI NIH HHS CA016042NCI NIH HHS CA092131NCI NIH HHS F30 CA165824NCI NIH HHS F30CA165824NCI NIH HHS P30 CA016042NCI NIH HHS P50 CA092131NCI NIH HHS R01 CA174294NIGMS NIH HHS T32 GM008042NIGMS NIH HHS T32GM008042
6 · The paper itself

Abstract

purposeProstate stem cell antigen (PSCA) is highly expressed in local prostate cancers and prostate cancer bone metastases and its expression correlates with androgen receptor activation and a poor prognosis. In this study, we investigate the potential clinical applications of immunoPET with the anti-PSCA A11 minibody, an antibody fragment optimized for use as an imaging agent. We compare A11 minibody immunoPET to (18)F-Fluoride PET bone scans for detecting prostate cancer bone tumors and evaluate the ability of the A11 minibody to image tumor response to androgen deprivation. EXPERIMENTAL

designOsteoblastic, PSCA-expressing, LAPC-9 intratibial xenografts were imaged with serial (124)I-anti-PSCA A11 minibody immunoPET and (18)F-Fluoride bone scans. Mice bearing LAPC-9 subcutaneous xenografts were treated with either vehicle or MDV-3100 and imaged with A11 minibody immunoPET/CT scans pre- and posttreatment. Ex vivo flow cytometry measured the change in PSCA expression in response to androgen deprivation.

resultsA11 minibody demonstrated improved sensitivity and specificity over (18)F-Fluoride bone scans for detecting LAPC-9 intratibial xenografts at all time points. LAPC-9 subcutaneous xenografts showed downregulation of PSCA when treated with MDV-3100 which A11 minibody immunoPET was able to detect in vivo.

conclusionsA11 minibody immunoPET has the potential to improve the sensitivity and specificity of clinical prostate cancer metastasis detection over bone scans, which are the current clinical standard-of-care. A11 minibody immunoPET additionally has the potential to image the activity of the androgen signaling axis in vivo which may help evaluate the clinical response to androgen deprivation and the development of castration resistance.

Indexed as

Antigens, NeoplasmImmunoglobulin FragmentsIodine RadioisotopesNeoplasm ProteinsAndrogen AntagonistsAnimalsAntineoplastic AgentsBenzamidesDisease Models, AnimalDisease ProgressionGPI-Linked ProteinsHeterograftsHumansMaleMiceNitrilesAndrogen AntagonistsAntigens, NeoplasmAntineoplastic AgentsBenzamidesenzalutamideGPI-Linked ProteinsImmunoglobulin FragmentsIodine RadioisotopesNeoplasm ProteinsNitrilesPhenylthiohydantoinPSCA protein, human

Identifiers

PMID25326233
PMCPMC4268335
OpenAlexW1976569516

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.