Evidence map›Paper›PMID 22607680›Full record

ArticleBioorganic & medicinal chemistry letters2012

Targeting prostate cancer cells with a multivalent PSMA inhibitor-guided streptavidin conjugate.

Tiancheng Liu, Jessie R Nedrow-Byers, Mark R Hopkins, Lisa Y Wu, Jeonghoon Lee, Peter T A Reilly, Clifford E Berkman

Open access · greenAbstract read
In one paragraph

Article in Bioorganic & medicinal chemistry letters, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

10 citing papers in PubMed, 24 citations in OpenAlex.

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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

7 authors at 2 institutions in 1 country.

Tiancheng LiuDepartment of Chemistry, Washington State University, Pullman, WA 99164-4630, USA.
Jessie R Nedrow-Byers
Mark R Hopkins
Lisa Y Wu
Jeonghoon Lee
Peter T A Reilly
Clifford E Berkman
Washington State University · USCancer Targeted Technology (United States) · US

Funding

Probe Optimization for Prostate Cancer DetectionR01CA140617 · NCI · WASHINGTON STATE UNIVERSITY · PI BERKMAN, CLIFFORD · 2010 to 2013
$1.8M
NCI NIH HHS 5R01CA140617-02NCI NIH HHS R01 CA140617
6 · The paper itself

Abstract

Prostate-specific membrane antigen (PSMA), a type II membrane glycoprotein, its high expression is associated with prostate cancer progression, and has been becoming an active target for imaging or therapeutic applications for prostate cancer. On the other hand, streptavidin-biotin system has been successfully employed in pretargeting therapy towards multiple cancers. Herein, we describe the synthesis of bifunctional ligands (biotin-CTT54, biotin-PEG(4)-CTT54, and biotin-PEG(12)-CTT54) possessing two functional motifs separated by a length-varied polyethylene glycol (PEG) spacer: one (CTT54) binds tumor-marker PSMA and the other (biotin) binds streptavidin or avidin. All three compounds exhibited high potencies (IC(50) values: 1.21, 2.53, and 10nM, respectively) and irreversibility; but only biotin-PEG(12)-CTT54 demonstrated specifically labeling PSMA-positive prostate cancer cells in a two-step pretargeting procedure. Additionally, the pre-formulated complex between biotin-PEG(12)-CTT54 and Cy5-streptavidin displayed the improved inhibitory potency (IC(50)=1.86 nM) and irreversibility against PSMA and rapid uptake of streptavidin conjugate into PSMA-positive prostate cancer cells through PSMA-associated internalization. Together, all these results supported a proof-concept that combination of streptavidin and PSMA's biotinylated inhibitor may lead to development of a novel strategy of tumor-targeting imaging or drug delivery towards prostate cancer.

Indexed as

Antibodies, MonoclonalAntigens, SurfaceAvidinBiotinBiotinylationCarbocyaninesCell Line, TumorCell SurvivalDrug Delivery SystemsEndocytosisEnzyme InhibitorsFluorescenceFluorescent DyesGlutamate Carboxypeptidase IIHumansImmunoconjugatesAntibodies, MonoclonalAntigens, SurfaceAvidinBiotinCarbocyaninescyanine dye 5Enzyme InhibitorsFluorescent DyesFOLH1 protein, humanGlutamate Carboxypeptidase IIImmunoconjugatesOrganophosphorus CompoundsPolyethylene GlycolsStreptavidin

Identifiers

PMID22607680
PMCPMC3526141
OpenAlexW2088889872

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.