Evidence map›Paper›PMID 20235611›Full record

ArticleJournal of medicinal chemistry2010

Modulation of cell surface expression of nonactivated cholecystokinin receptors using bivalent ligand-induced internalization.

Kaleeckal G Harikumar, Eyup Akgün, Philip S Portoghese, Laurence J Miller

Abstract read
In one paragraph

Article in Journal of medicinal chemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
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

9 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. CCK2 receptors in chronic pain.Neurobiology of pain (Cambridge, Mass.)
    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

4 authors.

Kaleeckal G HarikumarDepartment of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, Arizona 85259, USA.
Eyup Akgün
Philip S Portoghese
Laurence J Miller

Funding

Type A CCK Receptor Structure, Function and RegulationR37DK032878 · NIDDK · MAYO CLINIC COLL OF MED, MAYO CLINIC AZ · PI MILLER, LAURENCE J · 2001 to 2010
$4.5M
SELECTIVE NONPEPTIDE OPIOID LIGANDSR37DA001533 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI PORTOGHESE, PHILIP S · 1997 to 2006
$3.3M
Selective Opioid LigandsR01DA001533 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI PORTOGHESE, PHILIP S · 1985 to 2011
$3.0M
Type A CCK Receptor Structure, Function & RegulationR01DK032878 · NIDDK · MAYO CLINIC COLL OF MEDICINE, ROCHESTER · PI MILLER, LAURENCE J · 1986 to 2014
$2.5M
NIDA NIH HHS DA01533NIDA NIH HHS R01 DA001533NIDA NIH HHS R37 DA001533NIDDK NIH HHS DK32878NIDDK NIH HHS R01 DK032878NIDDK NIH HHS R37 DK032878
6 · The paper itself

Abstract

CCK(2) receptor antagonists potentiate pain relief by MOP receptor agonists. In an attempt to enhance this effect, we prepared bivalent ligands incorporating CCK(2) receptor antagonist and MOP receptor agonist pharmacophores. (9) Ligands with 16- to 22-atom spacers could simultaneously bind both receptors but provided no advantage in activity over individual ligands. We now examine the effect of these ligands on receptor internalization as a mechanism of receptor regulation. We prepared CHO cell lines expressing nonfluorescent halves (YN and YC) of yellow fluorescent protein attached to each receptor. Spatial approximation of constructs was needed to yield fluorescence. Monovalent MOP agonist 1 signaled normally and internalized the MOP receptor. Monovalent CCK(2) antagonist 2 did not stimulate receptor internalization. In the dual receptor-bearing cells, bivalent ligands 3a-c capable of simultaneously binding both receptors resulted in cell surface fluorescence and internalization of the fluorescent complex in a time- and temperature-dependent manner. Bivalent ligand 4 with spacer too short to occupy both receptors simultaneously yielded no signal. Receptor tethering with appropriate bivalent ligands can down-regulate signaling by moving a nonactivated receptor into the endocytic pathway.

Indexed as

AnimalsChlorocebus aethiopsCHO CellsCOS CellsCricetinaeCricetulusDown-RegulationEndocytosisGene Expression RegulationLigandsReceptors, CholecystokininReceptors, Opioid, muSubstrate SpecificityLigandsReceptors, CholecystokininReceptors, Opioid, mu

Identifiers

PMID20235611
PMCPMC3593351

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.