Evidence map›Paper›PMID 33226796›Full record

ArticleInorganic chemistry2020

Copper(II) Binding to PBT2 Differs from That of Other 8-Hydroxyquinoline Chelators: Implications for the Treatment of Neurodegenerative Protein Misfolding Diseases.

Kelly L Summers, Graham P Roseman, George J Sopasis, Glenn L Millhauser, Hugh H Harris, Ingrid J Pickering, Graham N George

Open access · greenAbstract read
In one paragraph

Article in Inorganic chemistry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

19 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. Review
  3. The interactions of copper, glutamate, and cuproptosis: insights into brain health and Alzheimer's disease pathology.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Review
  11. Review
  12. Article
  13. Chelator PBT2 Forms a Ternary CuInternational journal of molecular sciences · 2023
    Article
  14. Review
  15. New anti-cancer explorations based on metal ions.Journal of nanobiotechnology · 2022
    Review
  16. Article
  17. Article
  18. Cu(Proline)Molecules (Basel, Switzerland) · 2022
    Article
  19. Iron Metabolism in Aging and Age-Related Diseases.International journal of molecular sciences · 2022
    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

7 authors at 3 institutions in 3 countries.

Kelly L SummersMolecular and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada.ORCID http://orcid.org/0000-0001-9185-5052
Graham P RosemanDepartment of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States.
George J SopasisDepartment of Chemistry, University of Adelaide, South Australia 5005, Australia.
Glenn L MillhauserDepartment of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States.ORCID http://orcid.org/0000-0003-2442-7220
Hugh H HarrisDepartment of Chemistry, University of Adelaide, South Australia 5005, Australia.ORCID http://orcid.org/0000-0002-3472-8628
Ingrid J PickeringMolecular and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada.ORCID http://orcid.org/0000-0002-0936-2994
Graham N GeorgeMolecular and Environmental Sciences Group, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada.ORCID http://orcid.org/0000-0002-0420-7493
University of Saskatchewan · CAThe University of Adelaide · AUUniversity of California, Santa Cruz · US

Funding

ZWITTERION SURFACTANT DDMAB FOR IMPROV STABIL OF PROTEINP41RR001209 · NCRR · STANFORD UNIVERSITY · PI GONZALEZ, ANA M · 1985 to 2011
$38.9M
Molecular Aspects of Copper Binding to the Prion ProteinR01GM065790 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI MILLHAUSER, GLENN L · 2002 to 2018
$4.5M
Supplement Request for Emergency Replacement of EPR Amplifier and Acquisition of a Low Volume Resonator for Membrane ProteinsR35GM131781 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI GLENN L MILLHAUSER · 2019 to 2026
$3.6M
NCRR NIH HHS P41 RR001209NIGMS NIH HHS R01 GM065790NIGMS NIH HHS R35 GM131781
6 · The paper itself

Abstract

PBT2 (5,7-dichloro-2-[(dimethylamino)methyl]-8-hydroxyquinoline) is a small Cu(II)-binding drug that has been investigated in the treatment of neurodegenerative diseases, namely, Alzheimer's disease (AD). PBT2 is thought to be highly effective at crossing the blood-brain barrier and has been proposed to exert anti-Alzheimer's effects through the modulation of metal ion concentrations in the brain, specifically the sequestration of Cu(II) from amyloid plaques. However, despite promising initial results in animal models and in clinical trials where PBT2 was shown to improve cognitive function, larger-scale clinical trials did not find PBT2 to have a significant effect on the amyloid plaque burden compared with controls. We propose that the results of these clinical trials likely point to a more complex mechanism of action for PBT2 other than simple Cu(II) sequestration. To this end, herein we have investigated the solution chemistry of Cu(II) coordination by PBT2 primarily using X-ray absorption spectroscopy (XAS), high-energy-resolution fluorescence-detected XAS, and electron paramagnetic resonance. We propose that a novel

Indexed as

Alzheimer DiseaseAnimalsChelating AgentsClioquinolCoordination ComplexesCopperDensity Functional TheoryHumansLigandsMolecular StructureNeuroprotective AgentsProteostasis DeficienciesX-Ray Absorption SpectroscopyChelating AgentsClioquinolCoordination ComplexesCopperLigandsNeuroprotective AgentsPBT2 compound

Identifiers

PMID33226796
PMCPMC7927943
OpenAlexW3108527147

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.