Evidence map›Paper›PMID 22921089›Full record

ArticleJournal of medicinal chemistry2012

Structural sweet spot for A1 adenosine receptor activation by truncated (N)-methanocarba nucleosides: receptor docking and potent anticonvulsant activity.

Dilip K Tosh, Silvia Paoletta, Francesca Deflorian, Khai Phan, Steven M Moss, Zhan-Guo Gao, Xiaohui Jiang, Kenneth A Jacobson

Abstract read
In one paragraph

Article in Journal of medicinal chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
–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

28 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Purinergic system dysfunction in mood disorders: a key target for developing improved therapeutics.Progress in neuro-psychopharmacology & biological psychiatry · 2015
    Pooled it
  2. Review
  3. Selective modulation of epileptic tissue by an adenosine ABritish journal of pharmacology · 2024
    Article
  4. Structure activity relationships of 5-HTEuropean journal of medicinal chemistry · 2023
    Article
  5. Review
  6. Article
  7. Design and in Vivo Characterization of AJournal of medicinal chemistry · 2019
    Article
  8. Review
  9. Article
  10. Article
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  13. Article
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  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. John Daly Lecture: Structure-guided Drug Design for Adenosine and P2Y Receptors.Computational and structural biotechnology journal · 2015
    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

8 authors.

Dilip K ToshMolecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
Silvia Paoletta
Francesca Deflorian
Khai Phan
Steven M Moss
Zhan-Guo Gao
Xiaohui Jiang
Kenneth A Jacobson

Funding

Development Of Drugs Acting At Adenosine ReceptorsZIADK031117 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI JACOBSON, KENNETH ALAN · 2009 to 2025
$10.4M
Intramural NIH HHS ZIA DK031117NINDS NIH HHS HHSN271201100029C
6 · The paper itself

Abstract

A(1) adenosine receptor (AR) agonists display antiischemic and antiepileptic neuroprotective activity, but peripheral cardiovascular side effects impeded their development. SAR study of N(6)-cycloalkylmethyl 4'-truncated (N)-methanocarba-adenosines identified 10 (MRS5474, N(6)-dicyclopropylmethyl, K(i) = 47.9 nM) as a moderately A(1)AR-selective full agonist. Two stereochemically defined N(6)-methynyl group substituents displayed narrow SAR; groups larger than cyclobutyl greatly reduced AR affinity, and those larger or smaller than cyclopropyl reduced A(1)AR selectivity. Nucleoside docking to A(1)AR homology model characterized distinct hydrophobic cyclopropyl subpockets, the larger "A" forming contacts with Thr270 (7.35), Tyr271 (7.36), Ile274 (7.39), and carbon chains of glutamates (EL2) and the smaller subpocket "B" forming contacts between TM6 and TM7. 10 suppressed minimal clonic seizures (6 Hz mouse model) without typical rotarod impairment of A(1)AR agonists. Truncated nucleosides, an appealing preclinical approach, have more druglike physicochemical properties than other A(1)AR agonists. Thus, we identified highly restricted regions for substitution around N(6) suitable for an A(1)AR agonist with anticonvulsant activity.

Indexed as

Molecular Docking SimulationAnimalsAnticonvulsantsCHO CellsCricetinaeCricetulusHumansMaleMiceNucleosidesProtein ConformationReceptor, Adenosine A1Structure-Activity RelationshipAnticonvulsantsNucleosidesReceptor, Adenosine A1

Identifiers

PMID22921089
PMCPMC3463139

What OpenQuestion holds

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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.